FISTING is a playable word

fist Scrabble® Dictionary

verb
fisted, fisting, fists
to strike with the fist (the hand closed tightly)
49 Playable Words can be made from "FISTING"
   2-Letter Words (7 found)
   3-Letter Words (16 found)
   4-Letter Words (18 found)
   5-Letter Words (5 found)
   6-Letter Words (1 found)
   7-Letter Words (2 found)