KNIFES is a playable word

knife Scrabble® Dictionary

noun
pl. knives
a sharp-edged instrument used for cutting
verb
knifed, knifing, knifes
to cut with a knife
53 Playable Words can be made from "KNIFES"
   2-Letter Words (10 found)
   3-Letter Words (18 found)
   4-Letter Words (17 found)
   5-Letter Words (7 found)
   6-Letter Words (1 found)