HILLIER is a playable word

hilly Scrabble® Dictionary

adjective
hillier, hilliest
abounding in hills
34 Playable Words can be made from "HILLIER"
   2-Letter Words (7 found)
   3-Letter Words (8 found)
   4-Letter Words (15 found)
   5-Letter Words (2 found)
   6-Letter Words (1 found)
   7-Letter Words (1 found)