CONCAVES is a playable word

concave Scrabble® Dictionary

verb
concaved, concaving, concaves
to make concave (curving inward)
114 Playable Words can be made from "CONCAVES"
   2-Letter Words (12 found)
   3-Letter Words (32 found)
   6-Letter Words (4 found)
   7-Letter Words (1 found)
   8-Letter Words (1 found)