KNIFER is a playable word

knifer Scrabble® Dictionary

noun
pl. knifers
one that knifes
51 Playable Words can be made from "KNIFER"
   2-Letter Words (9 found)
   3-Letter Words (18 found)
   4-Letter Words (17 found)
   5-Letter Words (6 found)
   6-Letter Words (1 found)