JOYFULLEST is a playable word

joyful Scrabble® Dictionary

adjective
joyfuller, joyfullest
happy
(adverb) joyfully
242 Playable Words can be made from "JOYFULLEST"
   2-Letter Words (18 found)
   7-Letter Words (8 found)
   8-Letter Words (1 found)
   10-Letter Words (1 found)