COINFER is a playable word

coinfer Scrabble® Dictionary

verb
coinferred, coinferring, coinfers
to infer jointly
93 Playable Words can be made from "COINFER"
   2-Letter Words (14 found)
   3-Letter Words (28 found)
   5-Letter Words (8 found)
   6-Letter Words (4 found)
   7-Letter Words (2 found)