Synonyms of tenacious

1 Syllable

set, firm, staunch, fast, strong, bound, true, mule, tough, sure, stout, tight

2 Syllables

hardier, viscid, stickier, spunky, toughest, sturdy, sticky, clinging, tightest, stubborn, steadfast, puissant, strongest, hell-bent, solid, chronic, tough-nut, mulish, viscous, trojan, skintight, plucky, fixed, gummed, stalwart, tougher, iron, sturdier, hardiest, stronger, hardy, stickiest, dogged, tighter

3 Syllables

durable, viscose, dogmatic, relentless, untiring, hardline, resinous, diuturnal, glutinous, adamant, self-willed, unpliable, fireball, persistent, bulldogged, lingering, unswerving, uncompliant, wrong-headed, coherent, courageous, osculant, strong-willed, persisting, strong-minded, forceful

4 Syllables

unabated, unrelenting, unshakable, resolute, determined, adhesive, long-continued, pertinacious, ever-present, unabating, possessive, obdurate, close-fitting, purposive, retentive, unforgetful, unmovable, intractable, agglutinant, intransigent, purposeful, cohesive, obstinate, inflexible, heavy-duty, unbendable, persevering, iron-willed

5 Syllables

mucilaginous

6 Syllables

agglutinative, opinionative, perseverative