HILLIEST is a playable word

hilly Scrabble® Dictionary

adjective
hillier, hilliest
abounding in hills

103 Playable Words can be made from "HILLIEST"

   2-Letter Words (13 found)

   3-Letter Words (27 found)

   6-Letter Words (5 found)

   7-Letter Words (1 found)

   8-Letter Words (1 found)