SUMMAE is a playable word

summa Scrabble® Dictionary

noun
pl. summas or summae
a comprehensive work on a topic
44 Playable Words can be made from "SUMMAE"
   2-Letter Words (11 found)
   3-Letter Words (18 found)
   4-Letter Words (11 found)
   5-Letter Words (3 found)
   6-Letter Words (1 found)