CONCAVE is a playable word

concave Scrabble® Dictionary

verb
concaved, concaving, concaves
to make concave (curving inward)
43 Playable Words can be made from "CONCAVE"
   2-Letter Words (8 found)
   3-Letter Words (16 found)
   4-Letter Words (14 found)
   5-Letter Words (4 found)
   7-Letter Words (1 found)