MUSHROOMING is a playable word

mushroom Scrabble® Dictionary

verb
mushroomed, mushrooming, mushrooms
to grow or spread rapidly
379 Playable Words can be made from "MUSHROOMING"
   2-Letter Words (26 found)
   3-Letter Words (85 found)
   8-Letter Words (5 found)
   9-Letter Words (1 found)
   11-Letter Words (1 found)