CALFS is a playable word

calf Scrabble® Dictionary

noun
pl. calves or calfs
a young cow or bull
(adjective) calflike
15 Playable Words can be made from "CALFS"
   2-Letter Words (4 found)
   3-Letter Words (7 found)
   4-Letter Words (3 found)
   5-Letter Words (1 found)