adjective Etymology: Latin pertinac-, pertinax, from per- thoroughly + tenac-, tenax tenacious, from tenēre Date: 1626 1. adhering resolutely to an opinion, purpose, or design, perversely persistent, stubbornly unyielding or tenacious, see: obstinate ~ly adverb ~ness noun pertinacity noun
PERTINACIOUS
Meaning of PERTINACIOUS in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012