BIFFING is a playable word

biff Scrabble® Dictionary

verb
biffed, biffing, biffs
to hit
20 Playable Words can be made from "BIFFING"
   2-Letter Words (4 found)
   3-Letter Words (10 found)
   4-Letter Words (3 found)
   6-Letter Words (2 found)
   7-Letter Words (1 found)