INVALIDING is a playable word

invalid Scrabble® Dictionary

verb
invalided, invaliding, invalids
to disable physically
122 Playable Words can be made from "INVALIDING"
   2-Letter Words (12 found)
   3-Letter Words (30 found)
   7-Letter Words (8 found)
   8-Letter Words (3 found)
   10-Letter Words (1 found)