definition of
pertinacious

[1] #1 pertinacious s. [dogged, dour, persistent, tenacious, unyielding] 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". wn