DUOPOLY is a playable word

duopoly Scrabble® Dictionary

noun
pl. duopolies
the market condition existing when there are two sellers only
46 Playable Words can be made from "DUOPOLY"
   2-Letter Words (8 found)
   3-Letter Words (19 found)
   4-Letter Words (15 found)
   5-Letter Words (3 found)
   7-Letter Words (1 found)