CONCAVING is a playable word

concave Scrabble® Dictionary

verb
concaved, concaving, concaves
to make concave (curving inward)
81 Playable Words can be made from "CONCAVING"
   2-Letter Words (10 found)
   3-Letter Words (25 found)
   5-Letter Words (13 found)
   6-Letter Words (7 found)
   7-Letter Words (1 found)
   9-Letter Words (1 found)