Synonyms of persistent

1 Syllable

firm, bound, mule

2 Syllables

willful, come-through, grinder, diurnal, steady, sticky, clinging, patient, stubborn, gamer, undying, steadfast, haunting, hell-bent, constant, endless, chronic, mulish, gamest, hellbent, fixed, frequent, yearlong, termless, dogged

3 Syllables

enduring, durable, insistent, unflagging, industrious, tireless, livelong, habitual, hardcore, unfailing, relentless, easy-going, repeated, incessant, unceasing, untiring, perennial, diligent, sequential, diuturnal, timeless, continual, addicting, unwearying, fireball, perpetual, bulldogged, lingering, consistent, assiduous, tenacious, steady-going, lifelong, uncompliant, unended, eternal, succedent, round-the-clock, aeonian, unwaning, osculant, perduring, long-lived, abiding, persisting, permanent, strong-minded

4 Syllables

unabated, unrelenting, unshakable, resolute, sempiternal, mild-tempered, uncomplaining, immovable, unremitting, long-continued, undestroyable, pertinacious, ever-present, unabating, obdurate, perseverant, purposive, never-ending, unforgetful, agglutinant, purposeful, around-the-clock, oft-repeated, single-minded, obstinate, unbendable, never-ceasing, perdurable, persevering, unbribable

5 Syllables

importunate, unalleviated, unmitigated, incorruptible, inveterate, interminable

6 Syllables

indefatigable, inextinguishable, opinionative