TEDIUM is a playable word

tedium Scrabble® Dictionary

noun
pl. tediums
the state of being tedious
50 Playable Words can be made from "TEDIUM"
   2-Letter Words (13 found)
   3-Letter Words (17 found)
   4-Letter Words (15 found)
   5-Letter Words (4 found)
   6-Letter Words (1 found)