Roget's Thesaurus

#327. Tenacity

Nouns

tenacity, toughness, strength; (cohesion) 46; grip, grasp, stickiness, (cohesion) 46; sequacity; stubbornness etc. (obstinacy);; glue, cement, glutinousness, sequaciousness, viscidity, (semiliquidity) 352. leather; white leather, whitleather; gristle, cartilage. unbreakability, tensile strength.

Verbs

be tenacious etc. adj.; resist fracture. grip, grasp, stick (cohesion) 46.

Adjectives

tenacious, tough, strong, resisting, sequacious, stringy, gristly cartilaginous, leathery, coriaceous, tough as whitleather; stubborn etc. (obstinate) 606. unbreakable, indivisible; atomic.