UNTRIMS is a playable word

untrim Scrabble® Dictionary

verb
untrimmed, untrimming, untrims
to strip of trimming
97 Playable Words can be made from "UNTRIMS"
   2-Letter Words (12 found)
   5-Letter Words (11 found)
   6-Letter Words (3 found)
   7-Letter Words (1 found)