YUMMIEST is a playable word

yummy Scrabble® Dictionary

adjective
yummier, yummiest
delicious
noun
pl. yummies
something delicious
112 Playable Words can be made from "YUMMIEST"
   2-Letter Words (17 found)
   6-Letter Words (5 found)
   7-Letter Words (2 found)
   8-Letter Words (1 found)