DIPLOMA is a playable word

diploma Scrabble® Dictionary

noun
pl. diplomas or diplomata
a certificate of an academic degree
verb
diplomaed, diplomaing, diplomas
to furnish with a diploma
110 Playable Words can be made from "DIPLOMA"
   2-Letter Words (20 found)
   5-Letter Words (8 found)
   6-Letter Words (2 found)
   7-Letter Words (1 found)