definition of
persistent

[1] #1 persistent s. [relentless, unrelenting] never-ceasing; "the relentless beat of the drums". wn

[2] #2 persistent s. [haunting] continually recurring to the mind; "haunting memories"; "the cathedral organ and the distant voices have a haunting beauty"- Claudia Cassidy. wn

[3] #3 persistent s. [dogged, dour, pertinacious, 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