COJOINED is a playable word

cojoin Scrabble® Dictionary

verb
cojoined, cojoining, cojoins
to join together
75 Playable Words can be made from "COJOINED"
   2-Letter Words (13 found)
   3-Letter Words (21 found)
   5-Letter Words (7 found)
   6-Letter Words (5 found)
   8-Letter Words (1 found)