pertinacious

• POS: Adjective
• HYPHEN: per=ti=na=cious

CIDE DICTIONARY

pertinacious, a. [L. pertinax, -acis; per + tenax tenacious. See Per-, and Tenacious.].

•  Holding or adhering to any opinion, purpose, or design, with obstinacy; perversely persistent; obstinate; as, pertinacious plotters; a pertinacious beggar.  [1913 Webster]
•  Resolute; persevering; constant; steady.  [1913 Webster]

  "Diligence is a steady, constant, and pertinacious study."  [1913 Webster]

Syn. -- Obstinate; stubborn; inflexible; unyielding; resolute; determined; firm; constant; steady.

OXFORD DICTIONARY

pertinacious, adj. stubborn; persistent; obstinate (in a course of action etc.).

Derivative

pertinaciously adv. pertinaciousness n. pertinacity n.

Etymology

L pertinax (as PER-, tenax tenacious)

THESAURUS

pertinacious

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

ROGET THESAURUS

pertinacious

Perseverance

N perseverance, continuance, permanence, firmness, constancy, steadiness, singleness of purpose, tenacity of purpose, persistence, plodding, patience, sedulity, pertinacy, pertinacity, pertinaciousness, iteration, bottom, game, pluck, stamina, backbone, grit, indefatigability, indefatigableness, bulldog courage, persevering, constant, steady, steadfast, undeviating, unwavering, unfaltering, unswerving, unflinching, unsleeping, unflagging, undrooping, steady as time, unrelenting, unintermitting, unremitting, plodding, industrious, strenuous, pertinacious, persisting, persistent, solid, sturdy, staunch, stanch, true to oneself, unchangeable, unconquerable, indomitable, game to the last, indefatigable, untiring, unwearied, never tiring, through evil report and good report, through thick and thin, through fire and water, per fas et nefas, without fail, sink or swim, at any price, vogue la galere, never say die, give it the old college try, vestigia nulla retrorsum, aut vincer aut mori, la garde meurt et ne se rend pas, tout vient a temps pour qui sait attendre.