perseverant

hard-nosed indefatigable relentless resolute single-minded staunch steadfast stubborn tenacious unflagging unshakable unyielding

firm obstinate persevering steady unbending

adamant bullheaded hanging tough hardheaded inexorable inflexible insistent mulish obdurate perseverative pertinacious pigheaded rigid

irresolute surrendering unreliable weak yielding

flexible soft unstable

indifferent undetermined

ardent diligent fervent heartfelt impassioned passionate purposeful sincere urgent

eager keen

busy devoted fervid industrious sedulous vehement warm wholehearted zealous

apathetic cold cool dispassionate frigid indifferent insincere unenthusiastic unexcited

flippant thoughtless trivial unconcerned unimportant unpassionate unpurposeful unserious unthoughtful

assertive dire emphatic forceful incessant persistent pressing resolute unrelenting urgent

burning clamant clamorous continuous crying dogged exigent imperative imperious importunate obstinate peremptory persevering reiterative resounding

insignificant relenting trivial unimportant weak

disinterested indifferent lenient tolerant

constant continual endless enduring incessant insistent perpetual relentless repeated resolute steadfast steady stubborn tenacious unrelenting unremitting

assiduous bound bound and determined bulldogged dogged firm fixed immovable in for long haul indefatigable interminable like bad penny never-ending obdurate obstinate persevering persisting pertinacious sticky tireless unflagging unshakable

broken ceasing disloyal ending inconstant intermittent interrupted merciful stopping sympathetic temporary terminable unstable unsteady untrustworthy weak yielding

lazy relenting surrendering