Synonyms of stubborn

1 Syllable

set, firm, tough, stern, grim

2 Syllables

willful, headstrong, cussed, ferrous, froward, irons, balkier, steadfast, hell-bent, ferric, chronic, wayward, sullen, seton, mulish, balky, sterner, steeler, fixed, hardshell, well-set, hard-core, sited, grimmer, rigid, iron, grimmest, callous, sternest, mullish, dogged

3 Syllables

stiff-necked, unbowed, unhearing, hardcore, ornery, dogmatic, wrongheaded, relentless, restive, rebellious, adamant, self-willed, persistent, bulldogged, lingering, tenacious, ironclad, hard-nosed, hard-shelled, unbending, ruffianly, unyielding, untoward, contrary, wrong-headed, hardheaded, bullheaded, strong-willed, pigheaded, strong-minded, perverse

4 Syllables

unshakable, resolute, cantankerous, refractory, contumacious, determined, fanatical, pertinacious, singleminded, ever-present, unabating, obdurate, doctrinaire, purposive, unforgetful, never-failing, case-hardened, intractable, intransigent, unwaivering, purposeful, unfaltering, close-minded, single-minded, inflexible, unrelaxed, persevering, recalcitrant

5 Syllables

unreasonable, inexorable, casehardened, indomitable, undefeatable, negativistic, uncontrollable, unmanageable, inveterate, opinionated, unpersuadable

6 Syllables

insubordinate, perseverative