Herculean [adjective]

● Almighty

● Backbreaking

● Colossal

● Courageous

● Forceful

● Gargantuan

● Gigantic

● Hard

● Heroic

● Huge

● Impressive

● Laborious

● Mighty

● Strenuous

● Tough

● Vigorous

● Herculean

● Superhuman

● Hard

● Difficult

● Powerful

● Daunting

● Titanic

● Mammoth

● Strenuous

● Formidable

● Arduous

● Immense

● Enormous

● Painstaking

● Gigantic

● Tremendous

● Huge

● Challenging

● Onerous

● Demanding

● Sisyphean

● Heroic

● Monumental

● Gargantuan

● Valiant

● Tireless

● Prodigious

● Admirable

● Colossal

● Laborious

● Stupendous

● Commendable

● Untiring

● Indefatigable

● Backbreaking

● Indomitable

● Toilsome

● Tedious

● Relentless

● Undaunted

● Wearisome

● Unstinting

● Thankless

● Weighty

● Massive

● Resolute

● Fearsome

● Brave

● Momentous

● Unremitting

● Stakhanovite

● Gallant

● Superlative

● Grueling

● Remarkable

● Gutsy

● Moliminous

● Laudable

● Miraculous

● Staggering

● Futile

● Dauntless

● Inconsiderable

● Extraordinary

● Exhausting

● Feeble

● Manful

● Doughty

● Selfless

● Masterful

● Frantic

● Surmountable

● Quixotic

● Churchillian

● Unenviable

● Elephantine

● Astonishing

● Concerted

● Applaudable

● Gutty

● Epochal

● Unaccomplished

● Unfathomable

● Inspiriting

● Impressive

● Perilous

● Peerless

● Praiseworthy

● Ferocious

● Epic

● Unflagging

● Marvelous

● Unglamorous

● Redoubled

● Hercules beetle

● Toilful

● Ceaseless

● Undauntable

● Dizzying

● Unsung