MUCINOUS is a playable word

mucin Scrabble® Dictionary

noun
pl. mucins
a protein secreted by the mucous membranes
(adjective) mucinoid, mucinous
103 Playable Words can be made from "MUCINOUS"
   2-Letter Words (16 found)
   6-Letter Words (8 found)
   7-Letter Words (2 found)
   8-Letter Words (1 found)