HEIGHTENING is a playable word

heighten Scrabble® Dictionary

verb
heightened, heightening, heightens
to raise
111 Playable Words can be made from "HEIGHTENING"
   2-Letter Words (11 found)
   3-Letter Words (30 found)
   7-Letter Words (7 found)
   8-Letter Words (4 found)
   11-Letter Words (1 found)