determined, persistent
● Tenacious
● Stubborn
● Unshakable
● Steadfast
● Indefatigable
● Resolute
● Unflagging
● Hard-nosed
● Unyielding
● Staunch
● Single-minded
● Relentless
● Firm
● Unbending
● Obstinate
● Steady
● Persevering
● Adamant
● Bullheaded
● Hardheaded
● Inexorable
● Inflexible
● Insistent
● Mulish
● Obdurate
● Pertinacious
● Pigheaded
● Rigid
● Perseverant
● Tough nut
● Soft
● Flexible
● Yielding
● Weak
● Surrendering
● Undetermined
● Indifferent
● Unstable
● Irresolute
● Unreliable
● Perseverative
● Errors
● Behavior
● Responses
● Tendencies
● Behaviors
● Tendency
● Speech
● Behaviour
● Error
● Response
● Thinking
● Autonomy
● Activity
● Interference
● Movements
● Search
● Patterns
● Quality
● Processes
● Measures
● Style
● Trace
● Switching
● Trend
● Fashion
● Play
● Responding
● Antisocial
● Asocial
● Bizarre
● Compulsive
● Counterproductive
● Defeating
● Deviant
● Disintegrative
● Disruptive
● Effortful
● Imitative
● Negativistic
● Observable
● Obsessional
● Obsessive
● Regressive
● Repetitive
● Stereotyped
● Stereotypic