UNDERSOWING is a playable word

undersow Scrabble® Dictionary

verb
undersowed, undersown, undersowing, undersows
to sow land already seeded with a later-growing crop
908 Playable Words can be made from "UNDERSOWING"
   2-Letter Words (29 found)
   3-Letter Words (107 found)
   10-Letter Words (2 found)
   11-Letter Words (1 found)