STIFFEST 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

74 Playable Words can be made from "STIFFEST"

   2-Letter Words (10 found)

   3-Letter Words (21 found)

   6-Letter Words (3 found)

   8-Letter Words (1 found)