UNBUCKLING is a playable word

unbuckle Scrabble® Dictionary

verb
unbuckled, unbuckling, unbuckles
to loosen a buckle
81 Playable Words can be made from "UNBUCKLING"
   2-Letter Words (7 found)
   3-Letter Words (27 found)
   5-Letter Words (8 found)
   6-Letter Words (7 found)
   7-Letter Words (4 found)
   8-Letter Words (2 found)
   10-Letter Words (1 found)