HEEHAW is a playable word

heehaw Scrabble® Dictionary

verb
heehawed, heehawing, heehaws
to guffaw
22 Playable Words can be made from "HEEHAW"
   2-Letter Words (8 found)
   3-Letter Words (11 found)
   4-Letter Words (2 found)
   6-Letter Words (1 found)