DUFFING is a playable word

duff Scrabble® Dictionary

verb
duffed, duffing, duffs
to mishit a ball in golf
adjective
duffer, duffest
worthless, useless
39 Playable Words can be made from "DUFFING"
   2-Letter Words (6 found)
   3-Letter Words (20 found)
   4-Letter Words (10 found)
   5-Letter Words (2 found)
   7-Letter Words (1 found)