IMPUGN is a playable word

impugn Scrabble® Dictionary

verb
impugned, impugning, impugns
to make insinuations against
34 Playable Words can be made from "IMPUGN"
   2-Letter Words (9 found)
   3-Letter Words (18 found)
   4-Letter Words (5 found)
   6-Letter Words (2 found)