retained; not shed; persistent leaves remain attached past maturity; the persistent gills of fishes

[ Syn: lasting ]

never-ceasing; the relentless beat of the drums

[ Syn: relentless , unrelenting ]

continually recurring to the mind; haunting memories; the cathedral organ and the distant voices have a haunting beauty- Claudia Cassidy

[ Syn: haunting ]

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

[ Syn: dogged , dour , pertinacious , tenacious , unyielding ]