TREPANNING is a playable word

trepan Scrabble® Dictionary

verb
trepanned, trepanning, trepans
to trephine
364 Playable Words can be made from "TREPANNING"
   2-Letter Words (21 found)
   3-Letter Words (76 found)
   8-Letter Words (3 found)
   9-Letter Words (1 found)
   10-Letter Words (1 found)