STIFF is a playable word

stiff Scrabble® Dictionary

adjective
stiffer, stiffest
difficult to bend or stretch
verb
stiffed, stiffing, stiffs
to cheat someone by not paying
17 Playable Words can be made from "STIFF"
   2-Letter Words (5 found)
   3-Letter Words (6 found)
   4-Letter Words (4 found)
   5-Letter Words (2 found)