Advanced Words That Start With O

Advanced Words That Start With O

The letter ‘O’ is unique compared to most other letters—do you know why? It’s one of the few letters where the phonetic sound differs from its name. This article provides several lists of words that begin with ‘O’ to help you grasp its pronunciation and expand your vocabulary.

List of Advanced Words That Start With O

Advanced Words That Start With O with meaning and example

Obfuscate

• Meaning: To deliberately make something confusing or difficult to understand.
• Example: The politician’s speech seemed designed to obfuscate the real issues.

Obdurate

• Meaning: Stubbornly refusing to change one’s opinion or course of action.
• Example: Despite the evidence, he remained obdurate in his decision.

Obeisance

• Meaning: A gesture of respect or submission.
• Example: The knights made a deep obeisance to their king.

Oblivious

• Meaning: Unaware or not concerned about what is happening around.
• Example: She was oblivious to the noise outside as she focused on her book.

Obfuscation

• Meaning: The action of making something obscure or unclear.
• Example: The legal document was filled with obfuscation to confuse the reader.

Obtrusive

• Meaning: Noticeable or prominent in an unwelcome way.
• Example: The billboard was obtrusive in the otherwise scenic landscape.

Obligatory

• Meaning: Required by a legal, moral, or other rule; compulsory.
• Example: Attendance at the meeting is obligatory for all members.

Obscure

• Meaning: Not well-known; difficult to understand.
• Example: The author’s early work is obscure but influential.

Obsolescent

• Meaning: Becoming outdated or no longer used.
• Example: With the rise of digital media, printed newspapers are becoming obsolescent.

Obscurity

• Meaning: The state of being unknown, inconspicuous, or unimportant.
• Example: The artist lived in obscurity for most of his life.

Occult

• Meaning: Relating to mysterious, supernatural, or magical powers and phenomena.
• Example: The occult practices of the ancient tribe were feared by neighboring communities.

Ominous

• Meaning: Giving the impression that something bad or unpleasant is going to happen.
• Example: The dark clouds looked ominous as they gathered on the horizon.

Omnipotent

• Meaning: Having unlimited power; able to do anything.
• Example: In mythology, Zeus was considered omnipotent among the gods.

Omnipresent

• Meaning: Present everywhere at the same time.
• Example: The internet has become an omnipresent force in modern life.

Omnivorous

• Meaning: Eating both plant and animal foods.
• Example: Humans are generally omnivorous, consuming a variety of foods.

Ostracize

• Meaning: To exclude someone from a society or group.
• Example: The community ostracized him after the scandal.

Oscillate

• Meaning: To move or swing back and forth in a regular rhythm.
• Example: The fan oscillated slowly, cooling the room.

Orthodox

• Meaning: Conforming to established or traditional beliefs, especially in religion.
• Example: His views were considered orthodox by his religious community.

Outlandish

• Meaning: Looking or sounding bizarre or unfamiliar.
• Example: Her outlandish outfit caught everyone’s attention at the party.

Outmoded

• Meaning: No longer in fashion; outdated.
• Example: The outmoded practices were replaced with more modern approaches.

Obsequious

• Meaning: Obedient or attentive to an excessive degree.
• Example: His obsequious behavior towards his boss made his colleagues uncomfortable.

Opprobrium

• Meaning: Harsh criticism or censure.
• Example: The politician faced opprobrium from the public after the scandal.

Odious

• Meaning: Extremely unpleasant; repulsive.
• Example: The odious crime shocked the entire nation.

Opulent

• Meaning: Ostentatiously rich and luxurious or lavish.
• Example: The opulent mansion was filled with gold and marble.

Obtrude

• Meaning: To become noticeable in an unwelcome or intrusive way.
• Example: He did not want to obtrude on their conversation, so he stayed quiet.

Obnoxious

• Meaning: Highly offensive, unpleasant, or annoying.
• Example: His obnoxious comments irritated everyone at the meeting.

Officious

• Meaning: Assertive of authority in an annoyingly domineering way, especially with trivial matters.
• Example: The officious security guard kept asking for unnecessary details.

Omnivorously

• Meaning: In a manner of eating or consuming both animal and plant matter.
• Example: She read omnivorously, devouring books of all genres.

Overt

• Meaning: Done or shown openly; not secret or hidden.
• Example: There was an overt display of wealth at the charity event.

Onus

• Meaning: A burden, responsibility, or obligation.
• Example: The onus was on him to prove his innocence.

Optimal

• Meaning: Best or most favorable; optimum.
• Example: She found the optimal route to avoid the heavy traffic.

Oxymoron

• Meaning: A figure of speech in which apparently contradictory terms appear in conjunction.
• Example: “Deafening silence” is a classic example of an oxymoron.

Overwhelming

• Meaning: Very great in amount; very strong or intense.
• Example: The support from the community was overwhelming.

Oligarch

• Meaning: A ruler in an oligarchy, where a small group holds power.
• Example: The country was controlled by a wealthy oligarch who influenced politics.

Oblate

• Meaning: Having an equatorial diameter greater than the polar diameter; flattened at the poles.
• Example: The Earth is not a perfect sphere but an oblate spheroid.

Onerous

• Meaning: Involving a great deal of effort, trouble, or difficulty.
• Example: The onerous task of cleaning the entire house fell on him.

Odoriferous

• Meaning: Having or giving off a smell, especially an unpleasant one.
• Example: The odoriferous garbage needed to be taken out immediately.

Oppressive

• Meaning: Unjustly inflicting hardship and constraint, especially on a minority or other subordinate group.
• Example: The oppressive regime was condemned by the international community.

Outreach

• Meaning: The extent or length of reaching out; efforts to connect with others, especially in providing services or support.
• Example: The nonprofit’s outreach program helped many homeless people in the city.

Oversee

• Meaning: To supervise or manage an activity or person.
• Example: He was appointed to oversee the project and ensure its success.

Ornate

• Meaning: Made in an intricate shape or decorated with complex patterns.
• Example: The ornate design of the cathedral’s interior was breathtaking.

Obliques

• Meaning: Indirect, not explicit or done in a way that is not straightforward.
• Example: His oblique references to the problem left many confused about what he really meant.

Overstate

• Meaning: To express or state too strongly; exaggerate.
• Example: He tends to overstate his achievements during interviews.

Overcome

• Meaning: To successfully deal with or gain control of something difficult.
• Example: She overcame her fear of heights and climbed the mountain.

Ominously

• Meaning: In a way that suggests that something bad is going to happen.
• Example: The wind howled ominously through the trees.

Oratorical

• Meaning: Relating to the art of public speaking.
• Example: His oratorical skills were impressive, captivating the audience.

Opportunistic

• Meaning: Taking advantage of opportunities as they arise, often without considering ethics or principles.
• Example: The opportunistic businessman quickly took advantage of the market downturn.

Opalescent

• Meaning: Showing varying colors as an opal does; shimmering with milky colors.
• Example: The opalescent seashell gleamed in the sunlight.

Offend

• Meaning: To cause someone to feel upset, annoyed, or resentful.
• Example: His rude remarks offended many people at the gathering.

Obsession

• Meaning: An idea or thought that continually preoccupies or intrudes on a person’s mind.
• Example: His obsession with perfection made it difficult for him to complete projects.

Oscillating

• Meaning: Moving back and forth in a regular rhythm.
• Example: The oscillating fan cooled the room efficiently.

Ovation

• Meaning: An enthusiastic and prolonged applause.
• Example: The actor received a standing ovation for his performance.

Oblivion

• Meaning: The state of being unaware or unconscious of what is happening.
• Example: The singer’s career faded into oblivion after her last album.

Opaque

• Meaning: Not able to be seen through; not transparent.
• Example: The opaque glass window offered privacy from the outside.

Outlandishly

• Meaning: In a manner that is bizarre, strange, or unfamiliar.
• Example: She dressed outlandishly for the costume party.

Obliviously

• Meaning: In a way that is not aware or mindful of the surroundings.
• Example: He walked through the park obliviously, lost in thought.

Optimum

• Meaning: The most favorable condition or level for growth, reproduction, or success.
• Example: The soil was tested to ensure optimum conditions for planting.

Obstruct

• Meaning: To block or get in the way of something or someone.
• Example: The fallen tree obstructed the road, causing a traffic jam.

Outrageous

• Meaning: Shockingly bad or excessive.
• Example: The outrageous price of the dress discouraged her from buying it.

Onslaught

• Meaning: A fierce or destructive attack.
• Example: The soldiers were unprepared for the onslaught that followed.

Omnipotence

• Meaning: The quality of having unlimited or very great power.
• Example: The concept of omnipotence is often associated with gods in mythology.

Omniscient

• Meaning: Knowing everything.
• Example: The narrator of the novel is omniscient, aware of all characters’ thoughts and actions.

Objectify

• Meaning: To treat a person as an object or thing without regard to their dignity.
• Example: The advertisement was criticized for objectifying women.

Outstrip

• Meaning: To move faster than and overtake someone or something.
• Example: She managed to outstrip her competitors in the race.

Overreach

• Meaning: To extend beyond one’s abilities or resources.
• Example: The company overreached itself by trying to expand too quickly.

Obstruction

• Meaning: The action of obstructing or the state of being obstructed.
• Example: The obstruction in the artery was treated with surgery.

Oligopoly

• Meaning: A market structure dominated by a small number of large firms.
• Example: The telecommunications industry is often cited as an example of an oligopoly.

Obfuscations

• Meaning: The plural form of obfuscation; the acts of making something obscure or unclear.
• Example: The report was full of obfuscations that made it difficult to understand.

Opalescence

• Meaning: The visual property of something displaying a milky brightness and a play of colors from the surface.
• Example: The opalescence of the gemstone made it highly sought after.

Oscillation

• Meaning: Movement back and forth in a regular rhythm.
• Example: The oscillation of the pendulum was mesmerizing to watch.

Ominousness

• Meaning: The quality of being ominous; giving the impression that something bad is going to happen.
• Example: The ominousness of the storm clouds worried the sailors.

Overthrow

• Meaning: To remove forcibly from power.
• Example: The revolution aimed to overthrow the corrupt government.

Obligate

• Meaning: To bind or compel someone, especially legally or morally.
• Example: The contract obligates him to complete the project by the deadline.

Obfuscates

• Meaning: The third-person singular present tense of obfuscate; to make something obscure or unclear.
• Example: The speaker obfuscates his points with unnecessary jargon.

Outcast

• Meaning: A person who has been rejected by society or a social group.
• Example: He felt like an outcast after moving to the new school.

Outlaw

• Meaning: A person who has broken the law and is hiding or fleeing to avoid punishment.
• Example: The legendary outlaw was known for robbing from the rich to give to the poor.

Obliterate

• Meaning: To destroy utterly; wipe out.
• Example: The bomb blast obliterated the building.

Orchestrate

• Meaning: To arrange or direct the elements of a situation to produce a desired effect.
• Example: She orchestrated the entire event, ensuring it went smoothly.

Overlook

• Meaning: To fail to notice or consider something.
• Example: He overlooked the importance of the small details.

Overload

• Meaning: To load with too great a burden or to exceed the capacity.
• Example: The truck was overloaded with cargo, making it difficult to drive.

Ornamentation

• Meaning: The action of decorating something with elaborate additions or embellishments.
• Example: The room was full of beautiful ornamentation that reflected its historical significance.

Outcry

• Meaning: A strong and typically public expression of protest or outrage.
• Example: The decision to close the park led to a public outcry.

Opulence

• Meaning: Great wealth or luxuriousness.
• Example: The opulence of the palace was evident in every room.

Offensive

• Meaning: Causing someone to feel deeply hurt, upset, or angry.
• Example: His offensive remarks were condemned by everyone present.

Obliviousness

• Meaning: The state of being unaware or not noticing something.
• Example: His obliviousness to her feelings caused tension in their relationship.

Opacify

• Meaning: To make or become opaque.
• Example: The glass was treated to opacify it for privacy.

Overburden

• Meaning: To load with too much of something; to overwhelm.
• Example: The manager was overburdened with work, leading to burnout.

Oligarchy

• Meaning: A small group of people having control of a country, organization, or institution.
• Example: The nation was ruled by an oligarchy of wealthy elites.

Obscured

• Meaning: Kept from being seen; concealed.
• Example: The mountain was obscured by clouds, making it impossible to see the peak.

Oxidize

• Meaning: To combine or become combined chemically with oxygen.
• Example: The metal began to oxidize, forming a layer of rust.

Oscillations

• Meaning: Repeated movements back and forth or up and down.
• Example: The oscillations of the stock market made investors nervous.

Opportune

• Meaning: Happening at a time that is particularly convenient or appropriate.
• Example: The call came at an opportune moment, just as I was thinking about him.

Overestimate

• Meaning: To estimate something to be greater than it really is.
• Example: He overestimated his ability to finish the project in one day.

Overbalance

• Meaning: To lose balance or cause to lose balance.
• Example: She overbalanced and fell off the ladder.

Outmaneuver

• Meaning: To move more skillfully than others to achieve an advantage.
• Example: The chess champion outmaneuvered his opponent with a clever move.

Orchestration

• Meaning: The arrangement of music for instruments, especially an orchestra.
• Example: The orchestration of the symphony was complex and beautiful.

Orthopedics

• Meaning: The branch of medicine dealing with the correction of deformities of bones or muscles.
• Example: She consulted an orthopedics specialist for her knee pain.

Onerously

• Meaning: In a way that involves great effort and difficulty.
• Example: He onerously completed the task, despite the challenges.

Overexposure

• Meaning: Excessive exposure, especially to something harmful.
• Example: Overexposure to the sun can lead to skin damage.

Obliquely

• Meaning: Indirectly; not in a straightforward manner.
• Example: She mentioned the problem obliquely, avoiding direct confrontation.

Orthodoxies

• Meaning: Authorized or generally accepted beliefs or practices, especially in religion.
• Example: The book challenged the orthodoxies of traditional education systems.

Ornamented

• Meaning: Decorated or adorned, often elaborately.
• Example: The ornate hall was richly ornamented with gold and jewels.

Outrage

• Meaning: An extremely strong reaction of anger, shock, or indignation.
• Example: The decision to cut down the ancient trees sparked public outrage.

Omnivores

• Meaning: Animals or people that eat both plants and meat.
• Example: Bears are omnivores, consuming both berries and fish.

Oxidization

• Meaning: The process of oxidizing; the addition of oxygen to a substance.
• Example: The oxidization of the metal caused it to rust over time.

Objectification

• Meaning: The action of degrading someone to the status of a mere object.
• Example: The advertisement was criticized for its objectification of women.

Optometrists

• Meaning: Healthcare professionals who examine eyes and prescribe corrective lenses.
• Example: Optometrists play a crucial role in maintaining good vision health.

Oncology

• Meaning: The branch of medicine that deals with the prevention, diagnosis, and treatment of cancer.
• Example: Advances in oncology have significantly improved cancer survival rates.

Orchestrated

• Meaning: Carefully arranged or directed, especially in a complex situation.
• Example: The team orchestrated a successful product launch with meticulous planning.

Occasionally

• Meaning: At infrequent or irregular intervals; now and then.
• Example: She occasionally visits her grandparents in the countryside.

Outspoken

• Meaning: Frank in stating one’s opinions, especially if they are critical or controversial.
• Example: He is known for being outspoken on matters of social justice.

Overtax

• Meaning: To demand too much effort, resources, or taxes.
• Example: The strenuous work schedule overtaxed his health.

Onlooker

• Meaning: A person who observes an event without participating in it.
• Example: The accident attracted a crowd of curious onlookers.

Optimality

• Meaning: The condition of being the best or most efficient.
• Example: The design was praised for its optimality in energy usage.

Overextend

• Meaning: To stretch or extend beyond reasonable limits, often leading to problems.
• Example: The company overextended its resources, leading to financial difficulties.

Outdistance

• Meaning: To leave behind in terms of distance or progress.
• Example: She managed to outdistance her competitors in the marathon.

Oscillates

• Meaning: Moves or swings back and forth at a regular speed.
• Example: The fan oscillates to cool different parts of the room.

Overshadow

• Meaning: To appear more prominent or important than something else.
• Example: The scandal overshadowed his otherwise successful career.

Outshine

• Meaning: To be much more successful or impressive than someone or something else.
• Example: Her performance outshone all the others in the competition.

Occultist

• Meaning: A person who practices or studies the occult (mystical or supernatural beliefs).
• Example: The occultist claimed to have knowledge of hidden powers and rituals.

Oxidative

• Meaning: Relating to or caused by oxidation, especially in living organisms.
• Example: Antioxidants help protect the body from oxidative stress.

Outsider

• Meaning: A person who does not belong to a particular group or community.
• Example: As an outsider, she found it difficult to understand the local customs.

Omnisciently

• Meaning: With complete or unlimited knowledge.
• Example: The narrator spoke omnisciently, knowing every character’s thoughts.

Opportunist

• Meaning: A person who exploits circumstances to gain immediate advantage, often without regard for principles.
• Example: He was seen as an opportunist, always taking advantage of others’ misfortunes.

Obnoxiously

• Meaning: In an extremely unpleasant or annoying manner.
• Example: The customer behaved obnoxiously, making unreasonable demands.

Overpower

• Meaning: To defeat or overcome with superior strength or force.
• Example: The soldiers managed to overpower the enemy forces.

Oligarchic

• Meaning: Relating to a form of government in which power is held by a small group of people.
• Example: The country was ruled by an oligarchic elite that controlled the economy.

Orthoepy

• Meaning: The correct or accepted pronunciation of words.
• Example: The professor specialized in orthoepy, ensuring students pronounced words accurately.

Overdrawn

• Meaning: Having a negative balance in a bank account.
• Example: Her account was overdrawn after she made several large purchases.

Ostensibly

• Meaning: Apparently or purportedly, but perhaps not actually.
• Example: He was ostensibly on a business trip, but it was later revealed he was on vacation.

Oscillated

• Meaning: Moved or swung back and forth at a regular speed.
• Example: The pendulum oscillated with precise regularity.

Obliterated

• Meaning: Destroyed completely; wiped out.
• Example: The village was obliterated by the massive earthquake.

Observant

• Meaning: Quick to notice things; attentive.
• Example: She was highly observant, noticing even the smallest details.

Ocular

• Meaning: Of or connected with the eyes or vision.
• Example: The ocular examination revealed no abnormalities in his vision.

Obsolescence

• Meaning: The process of becoming outdated or no longer used.
• Example: The obsolescence of old technology often leads to innovation.

Opine

• Meaning: To express an opinion.
• Example: He opined that the new policy would benefit the company.

Omission

• Meaning: The act of leaving out or neglecting something.
• Example: The omission of her name from the list was a mistake.

Organize

• Meaning: To arrange or structure something systematically.
• Example: They organized a fundraiser to support the local shelter.

Ophthalmology

• Meaning: The branch of medicine dealing with the eyes and their diseases.
• Example: She decided to specialize in ophthalmology to help people with vision problems.

Optics

• Meaning: The scientific study of sight and the behavior of light.
• Example: The lab specializes in the optics of lenses and mirrors.

Overture

• Meaning: An introduction to something more substantial; a proposal or offer.
• Example: The peace overture was well-received by both parties.

Outclass

• Meaning: To surpass in quality or performance.
• Example: Her skills outclassed all the other competitors in the tournament.

Osteopathy

• Meaning: A type of alternative medicine that emphasizes physical manipulation of the body’s muscles and bones.
• Example: He visited an osteopathy clinic to treat his chronic back pain.

Obsolesce

• Meaning: To become obsolete or outdated.
• Example: The technology quickly began to obsolesce with the advent of newer models.

Orthodoxy

• Meaning: Authorized or generally accepted theory, doctrine, or practice.
• Example: The orthodoxies of the past are often challenged by new ideas.

Obfuscatory

• Meaning: Tending to make something obscure, unclear, or unintelligible.
• Example: The lawyer’s obfuscatory language confused the jury.

Outwit

• Meaning: To deceive or defeat someone by being more clever.
• Example: She managed to outwit her opponents with a clever strategy.

Oftentimes

• Meaning: Frequently; often.
• Example: Oftentimes, the simplest solutions are the most effective.

Overdose

• Meaning: Taking too much of a drug, often with harmful consequences.
• Example: An overdose of the medication can lead to serious health issues.

Openness

• Meaning: The quality of being open; transparency.
• Example: The organization values openness and honesty in all communications.

Obligingly

• Meaning: In a way that shows willingness to do a favor or help.
• Example: He obligingly assisted with the project despite his busy schedule.

Oscillatory

• Meaning: Relating to or characterized by oscillation or fluctuation.
• Example: The oscillatory motion of the pendulum was crucial for the clock’s accuracy.

Overambitious

• Meaning: Excessively ambitious; aiming for more than is reasonable or practical.
• Example: His overambitious plans led to several failures before achieving success.

Outspokenly

• Meaning: In a way that is frank and candid.
• Example: She spoke outspokenly about the need for reform in the system.

Outmodedness

• Meaning: The state of being outdated or no longer in style.
• Example: The outmodedness of the technology was evident in its lack of features compared to modern devices.

Oncoming

• Meaning: Approaching or coming closer.
• Example: The oncoming traffic made it difficult to see the road ahead.

Orthography

• Meaning: The conventional spelling system of a language.
• Example: Mastery of orthography is essential for proper writing and communication.

Organism

• Meaning: An individual animal, plant, or single-celled life form.
• Example: The biologist studied various organisms to understand their habitats.

Obliteration

• Meaning: The act of destroying something completely.
• Example: The bomb resulted in the obliteration of the building.

Outnumber

• Meaning: To be greater in number than.
• Example: The invading forces were outnumbered by the defenders.

Oscillograph

• Meaning: A device for recording oscillations, such as in electrical signals.
• Example: The scientist used an oscillograph to measure the frequency of the signal.

Omnipotently

• Meaning: With unlimited power or authority.
• Example: The leader ruled omnipotently, making decisions without any opposition.

Overtake

• Meaning: To catch up with and pass someone or something.
• Example: The runner managed to overtake his competitors in the final stretch.

Occultation

• Meaning: The act of hiding or obscuring something; in astronomy, the hiding of one celestial body by another.
• Example: The occultation of the moon by the earth created a beautiful lunar eclipse.

Overjoyed

• Meaning: Extremely happy or delighted.
• Example: She was overjoyed with the news of her promotion.

Obelisk

• Meaning: A tall, four-sided, narrow tapering monument with a pyramidion on top.
• Example: The ancient obelisk stood proudly in the center of the city square.

Outmaneuvered

• Meaning: To gain an advantage over someone by using clever tactics.
• Example: The strategist outmaneuvered the opposing team with a brilliant plan.

Ozone

• Meaning: A gas composed of three oxygen atoms, which absorbs most of the sun’s harmful ultraviolet radiation.
• Example: The depletion of the ozone layer is a major environmental concern.

Overseeing

• Meaning: Supervising or managing something.
• Example: She was responsible for overseeing the entire project from start to finish.

Orthostatic

• Meaning: Relating to or caused by standing up; often used in medical contexts to describe changes in blood pressure upon standing.
• Example: Orthostatic hypotension occurs when a person stands up and experiences a sudden drop in blood pressure.

Overeager

• Meaning: Excessively enthusiastic or keen.
• Example: His overeager approach to the project caused him to overlook important details.

Obstructive

• Meaning: Causing a blockage or hindrance.
• Example: The obstructive nature of the bureaucracy delayed the approval process.

Opportunism

• Meaning: Taking advantage of opportunities with little regard for principles.
• Example: The politician’s opportunism was evident in his sudden policy changes.

Overexpose

• Meaning: To expose excessively, often leading to negative consequences.
• Example: Overexposing the film to light ruined the photographs.

Outperform

• Meaning: To perform better than someone or something else.
• Example: The new software outperformed its competitors in speed and efficiency.

Onward

• Meaning: Moving forward or continuing ahead.
• Example: The team pressed onward despite the challenging conditions.

Ophthalmic

• Meaning: Related to the eyes or vision.
• Example: The ophthalmic surgeon specialized in treating complex eye conditions.

Outlying

• Meaning: Situated far from the center or main area.
• Example: The outlying villages were often neglected by the central government.

Oxymorons

• Meaning: Combinations of contradictory or incongruent words (e.g., “deafening silence”).
• Example: The phrase “bitter sweet” is a classic example of an oxymoron.

Oubliette

• Meaning: A secret dungeon with an opening only at the top.
• Example: The medieval oubliette was used for imprisoning political prisoners.

Osmosis

• Meaning: The process by which molecules pass through a semipermeable membrane from a less concentrated solution to a more concentrated one.
• Example: Osmosis is a key process in maintaining cellular functions.

Optimalness

• Meaning: The state of being the best or most effective possible.
• Example: The optimalness of the machine’s performance was due to its advanced design.

Outlandishness

• Meaning: The quality of being bizarre or strange.
• Example: The outlandishness of his outfit drew many curious stares.

Omnipotency

• Meaning: The quality of having unlimited power or authority.
• Example: The ruler’s omnipotency was feared by all who lived under his regime.

Oscillographs

• Meaning: Instruments used to measure and record oscillations.
• Example: The engineers used oscillographs to analyze the vibration patterns.

Overstated

• Meaning: Presented or described in a way that exaggerates the truth.
• Example: The benefits of the new technology were overstated in the promotional material.

Organizational

• Meaning: Relating to the structure or arrangement of an organization.
• Example: Effective organizational skills are crucial for managing large projects.

Obscuredly

• Meaning: In a way that is not clear or easily understood.
• Example: The details of the agreement were obscuredly written in legal jargon.

Orthodoxical

• Meaning: Pertaining to orthodox or traditional beliefs.
• Example: The orthodoxical practices of the community were strictly followed.

Overdoing

• Meaning: Doing something to an excessive degree.
• Example: He was criticized for overdoing the decorations for the party.

Outlook

• Meaning: A person’s attitude or perspective on a situation; the view from a particular place.
• Example: Her optimistic outlook helped her overcome many challenges.

Orotund

• Meaning: Having a full, deep, and imposing sound, especially in speech.
• Example: The orotund voice of the announcer commanded attention.

Optometrist

• Meaning: A healthcare professional who examines and treats eyes and vision.
• Example: The optometrist recommended new glasses for improved vision.

Overheated

• Meaning: Becoming excessively hot.
• Example: The engine overheated after prolonged use without proper maintenance.

Orthognathic

• Meaning: Relating to the alignment or correction of jaw and facial bones.
• Example: Orthognathic surgery was required to correct the severe jaw misalignment.

Ointment

• Meaning: A smooth, oily substance used to soothe or heal the skin.
• Example: She applied an ointment to the wound to promote healing.

Overtly

• Meaning: In a way that is open and observable; not hidden.
• Example: His overtly friendly behavior made everyone feel welcome.

Overindulgent

• Meaning: Excessively lenient or generous, often to the point of excess.
• Example: His overindulgent parenting led to the children becoming spoiled and unruly.

Onco

• Meaning: Pertaining to tumors or cancer.
• Example: The research focused on the onco-genetic factors influencing cancer development.

Overcompensate

• Meaning: To compensate excessively for something, often leading to an opposite effect.
• Example: She overcompensated for her lack of confidence by being overly assertive in meetings.

Opioid

• Meaning: A class of drugs derived from opium used for pain relief.
• Example: Opioids, such as morphine, are often prescribed for severe pain but come with a risk of addiction.

Oncologist

• Meaning: A medical doctor specializing in the diagnosis and treatment of cancer.
• Example: The oncologist developed a treatment plan for the patient’s complex cancer diagnosis.

Orator

• Meaning: A skilled public speaker.
• Example: The orator captivated the audience with a powerful and persuasive speech.

Orchid

• Meaning: A diverse family of flowering plants with complex and often colorful blooms.
• Example: Her garden was adorned with a variety of orchids, each showcasing unique patterns and colors.

Ordinance

• Meaning: A local law or regulation.
• Example: The city council passed an ordinance to regulate noise levels in residential areas.

Overambition

• Meaning: Excessive ambition that can lead to impractical or unrealistic goals.
• Example: His overambition often led to frustration when he couldn’t achieve his lofty goals.

Objectively

• Meaning: In a way that is not influenced by personal feelings or opinions.
• Example: The committee evaluated the applicants objectively, based solely on their qualifications.

Outstretch

• Meaning: To extend or stretch out.
• Example: The gymnast outstretched her arms as she performed a perfect split in the air.

Obstinately

• Meaning: Stubbornly refusing to change one’s opinion or chosen course of action.
• Example: He obstinately refused to admit he was wrong, even when presented with clear evidence.

Ornithologist

• Meaning: A scientist who studies birds.
• Example: The ornithologist spent years researching migratory patterns and bird behaviors.

Optometry

• Meaning: The practice or profession of examining and treating eyes and vision.
• Example: She visited the optometrist for a comprehensive optometry examination to update her prescription.

Oxymoronic

• Meaning: Involving or characterized by an oxymoron, where contradictory terms appear together.
• Example: The phrase “deafening silence” is an oxymoronic expression that vividly conveys a profound sense of quiet.

Ostracism

• Meaning: The exclusion from a society or group.
• Example: The student faced ostracism after being falsely accused of cheating.

Overripe

• Meaning: Ripe beyond the ideal stage, often leading to spoilage.
• Example: The overripe bananas had turned mushy and were no longer suitable for eating.

Overpopulation

• Meaning: The condition of having a population too large to be sustained by the available resources.
• Example: Overpopulation in urban areas can lead to congestion, resource shortages, and environmental degradation.

Objective

• Meaning: Not influenced by personal feelings or opinions; factual.
• Example: The report was presented in an objective manner, focusing purely on the data collected.

Overawe

• Meaning: To impress or intimidate to the extent of causing fear or admiration.
• Example: The grandeur of the ancient cathedral managed to overawe even the most seasoned travelers.

Overachievement

• Meaning: Achieving more than what is expected or required.
• Example: Her overachievement in academic performance earned her numerous scholarships and accolades.

Omnivore

• Meaning: An animal or person that eats a variety of foods, including both plants and animals.
• Example: Humans are omnivores, as they consume a diverse diet of meat, vegetables, and fruits.

Advanced Words That Start With O