pertinacious

adj.

1. Holding tenaciously to a purpose, belief, opinion, or course of action.
2. Stubbornly or perversely persistent. See synonyms at obstinate.

[From Latin pertināx, pertināc- : per-, per- + tenāx, tenacious (from tenēre, to hold).]

pertinaciously per'ti·na'cious·ly adv.
pertinaciousness per'ti·na'cious·ness n.

(pur-tin-AY-shuhs)

adjective
1. Holding resolutely to a purpose, belief, or opinion.
2. Stubbornly unyielding.

Etymology
From Latin pertinac- pertinax, per- (thoroughly) + tenax (tenacious), from tenere (to hold)

Usage
"A man is pertinacious when he defends his folly and trusts too greatly in his own wit." — Geoffrey Chaucer; Canterbury Tales: Explicit Secunda Pars Penitentie; 1387-1400 (Translation: Walter W. Skeat).

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adjective

1. Tenaciously unwilling to yield: bullheaded, dogged, hardheaded, headstrong, mulish, obstinate, perverse, pigheaded, stiff-necked, tenacious, willful. See resist/yield.
2. Difficult to alleviate or cure: obstinate, persistent, stubborn. See continue/stop/pause.

adj

Definition: determined
Antonyms: irresolute, tentative

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perversely persistent; stubbornly unyielding

IN BRIEF: Stubbornly unyielding or tenacious in purpose; persevering.

When he made up his little [mind] to have or to do anything, all the king's horses and all the king's men could not change that pertinacious little mind. — Louisa May Alcott (1832-1888)

Dansk (Danish)
adj. - ihærdig

Nederlands (Dutch)
eigenwijs, hardnekkig

Français (French)
adj. - opiniâtre (sout)

Deutsch (German)
adj. - hartnäckig, starrsinnig

Ελληνική (Greek)
adj. - ισχυρογνώμων, πεισματάρης/-ικος, ξεροκέφαλος, επίμονος

Italiano (Italian)
tenace, pertinace, ossessivo

Português (Portuguese)
adj. - pertinaz, perseverante

Русский (Russian)
упрямый, настойчивый

Español (Spanish)
adj. - pertinaz

Svenska (Swedish)
adj. - ihållande, envis, halsstarrig

中文（简体）(Chinese (Simplified))
执拗的, 顽强的, 顽固的

中文（繁體）(Chinese (Traditional))
adj. - 執拗的, 頑強的, 頑固的

한국어 (Korean)
adj. - 악착스러운, 끈기 있는, 집요한

日本語 (Japanese)
adj. - 粘り強い, 執ような, 頑固な, しつこい, 不屈の

العربيه (Arabic)
‏(صفه) متشبث بأهدافه ورأيه, لا تلين قناته, ملح في مطالبه, عنيد, صلب الرأي‏

עברית (Hebrew)
adj. - ‮דבק במטרה, מתמיד, עקשן‬

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