UNPENT is a playable word

unpen Scrabble® Dictionary

verb
unpenned or unpent, unpenning, unpens
to release from confinement
26 Playable Words can be made from "UNPENT"
   2-Letter Words (9 found)
   3-Letter Words (11 found)
   4-Letter Words (3 found)
   5-Letter Words (1 found)
   6-Letter Words (2 found)