DUMFOUND is a playable word

dumfound Scrabble® Dictionary

verb
dumfounded, dumfounding, dumfounds
to astonish
40 Playable Words can be made from "DUMFOUND"
   2-Letter Words (11 found)
   3-Letter Words (19 found)
   4-Letter Words (6 found)
   5-Letter Words (3 found)
   8-Letter Words (1 found)