OPTIMISM is a playable word

optimism Scrabble® Dictionary

noun
pl. optimisms
a disposition to look on the favorable side of things
84 Playable Words can be made from "OPTIMISM"
   2-Letter Words (15 found)
   3-Letter Words (31 found)
   5-Letter Words (8 found)
   6-Letter Words (1 found)
   8-Letter Words (1 found)