pertinacious
UK /ˌpɜːtɪˈneɪʃəs/ · US /pɝtn̩ˈeɪʃəs/ adjective
- adjective Holding tenaciously to an opinion or purpose.
- adjective Stubbornly resolute or tenacious.
Synonyms
Etymology
From pertinace + -ious, from Old French pertinace, from Latin pertinax, from per- (“very”) + tenax (“tenacious”).
Webster’s 1913
- adjective Holding or adhering to any opinion, purpose, or design, with obstinacy; perversely persistent; obstinate; as, pertinacious plotters; a pertinacious beggar.
- adjective Resolute; persevering; constant; steady.
Etymology [L. pertinax, -acis; per + tenax tenacious. See Per-, and Tenacious.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “pertinacious”, CC BY-SA 4.0. Details