BRAINIAC is a playable word

brainiac Scrabble® Dictionary

noun
pl. brainiacs
a very intelligent person
72 Playable Words can be made from "BRAINIAC"
   2-Letter Words (9 found)
   3-Letter Words (22 found)
   5-Letter Words (13 found)
   6-Letter Words (5 found)
   7-Letter Words (1 found)
   8-Letter Words (1 found)