Adjacent Words

Pertinacious definitions

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Webster's 1828 Dictionary

PERTINA'CIOUS, a. [L.pertinax; per and teneo, to hold.]
1. Holding or adhering to any opinion, purpose or design with obstinacy; obstinate; perversely resolute or persistent; as pertinacious in opinion; a man of pertinacious confidence.
2. Resolute; firm; constant; steady.
Diligence is a steady, constant, pertinacious study--
[This word often implies a censurable degree of firmness of constancy, like obstinacy.

WordNet (r) 3.0 (2005)

adj
1: stubbornly unyielding; "dogged persistence"; "dour determination"; "the most vocal and pertinacious of all the critics"; "a mind not gifted to discover truth but tenacious to hold it"- T.S.Eliot; "men tenacious of opinion" [syn: dogged, dour, persistent, pertinacious, tenacious, unyielding]

Merriam Webster's

adjective Etymology: Latin pertinac-, pertinax, from per- thoroughly + tenac-, tenax tenacious, from ten?re Date: 1626 1. a. adhering resolutely to an opinion, purpose, or design b. perversely persistent 2. stubbornly unyielding or tenacious Synonyms: see obstinate • pertinaciously adverb • pertinaciousness noun • pertinacity noun

Oxford Reference Dictionary

adj. stubborn; persistent; obstinate (in a course of action etc.). Derivatives: pertinaciously adv. pertinaciousness n. pertinacity n. Etymology: L pertinax (as PER-, tenax tenacious)

Webster's 1913 Dictionary

Pertinacious Per`ti*na"cious, a.[L. pertinax, -acis; per + tenax tenacious. See Per-, and Tenacious.] 1. Holding or adhering to any opinion, purpose, or design, with obstinacy; perversely persistent; obstinate; as, pertinacious plotters; a pertinacious beggar. 2. Resolute; persevering; constant; steady. Diligence is a steady, constant, and pertinacious study. --South. Syn: Obstinate; stubborn; inflexible; unyielding; resolute; determined; firm; constant; steady. -- Per`ti*na"cious*ly, adv. -- Per`ti*na"cious*ness, n.

Collin's Cobuild Dictionary

Someone who is pertinacious continues trying to do something difficult rather than giving up quickly. (FORMAL) ADJ

Soule's Dictionary of English Synonyms

a. 1. Constant, steady, firm, determined, resolute, steadfast, stanch. 2. Stubborn, obstinate, dogged, wilful, mulish, unyielding, intractable, headstrong, perverse, wayward, inflexible.

Moby Thesaurus

assiduous, balking, balky, bigoted, bulldogged, bulldoggish, bulletheaded, bullheaded, case-hardened, clamant, clamorous, constant, continuing, crying, demanding, diligent, dogged, dogmatic, draining, enduring, exacting, exigent, exorbitant, extortionate, faithful, fanatic, fixed, game, gamy, grasping, gritty, gutsy, gutty, hardheaded, headstrong, immutable, importunate, inalterable, indefatigable, indomitable, industrious, insistent, instant, intolerant, invincible, lasting, loud, loyal, mettlesome, mulish, nervy, never-tiring, obstinate, opinionated, overzealous, patient, patient as Job, permanent, perseverant, persevering, persistent, persisting, perverse, pigheaded, plodding, plucky, plugging, preoccupied, pressing, rapt, red-blooded, refractory, relentless, resolute, restive, sedulous, self-willed, set, single-minded, sleepless, slogging, spirited, spiritful, spunky, stable, steadfast, steady, stiff-necked, strong-willed, strongheaded, stubborn, sulky, sullen, taxing, tenacious, tireless, tough, unabating, unconquerable, uncooperative, undaunted, undiscouraged, undrooping, unfailing, unfaltering, unflagging, unflinching, unintermitting, uninterrupted, unnodding, unregenerate, unrelaxing, unrelenting, unremitting, unshakable, unsleeping, unswerving, untiring, unwavering, unwearied, unwearying, unwinking, unyielding, urgent, utterly attentive, weariless, willful