per·sist 
(pər-sĭst)
(pər-sĭst)intr.v. per·sist·ed, per·sist·ing, per·sists
1. To be obstinately repetitious, insistent, or tenacious.
2. To hold firmly and steadfastly to a purpose, state, or undertaking despite obstacles, warnings, or setbacks.
3. To continue in existence; last: hostilities that have persisted for years.
[Latin persistere : per-, per- + sistere, to stand; see stā- in the Appendix of Indo-European roots.]
per·sister n.
- out of date
- out-of-date
- out-of-door
- out-of-door
- out-of-doors
- out-of-doors
- out of gourd
- out of hand
- out of head
- out of humor
- out of it
- out of it
- out of joint
- out of key
- out of line
- out of luck
- out of one's gourd
- out of one's head
- out of phase
- out of play
- out of plumb
- out-of-pocket
- out of pocket
- out of print
- out of season