Read the dictionary definition of persistent. All definitions for this word.
1. never-ceasing
1. the relentless beat of the drums
2. continually recurring to the mind
1. haunting memories
2. the cathedral organ and the distant voices have a haunting beauty
3. retained; not shed
1. persistent leaves remain attached past maturity
2. the persistent gills of fishes
4. stubbornly unyielding
1. dogged persistence
2. dour determination
3. the most vocal and pertinacious of all the critics
4. a mind not gifted to discover truth but tenacious to hold it
5. men tenacious of opinion