UNLOCK is a playable word

unlock Scrabble® Dictionary

verb
unlocked, unlocking, unlocks
to unfasten the lock of
19 Playable Words can be made from "UNLOCK"
   2-Letter Words (6 found)
   3-Letter Words (3 found)
   4-Letter Words (7 found)
   5-Letter Words (2 found)
   6-Letter Words (1 found)