DUPLET is a playable word

duplet Scrabble® Dictionary

noun
pl. duplets
a set of two of one kind
43 Playable Words can be made from "DUPLET"
   2-Letter Words (8 found)
   3-Letter Words (18 found)
   4-Letter Words (12 found)
   5-Letter Words (4 found)
   6-Letter Words (1 found)