COSTA is a playable word

costa Scrabble® Dictionary

noun
pl. costae
a rib
(adjective) costal (adverb) costally
40 Playable Words can be made from "COSTA"
   2-Letter Words (6 found)
   3-Letter Words (13 found)
   4-Letter Words (16 found)
   5-Letter Words (5 found)