OUTCROSSING is a playable word

outcross Scrabble® Dictionary

verb
outcrossed, outcrossing, outcrosses
to cross with a relatively unrelated individual
601 Playable Words can be made from "OUTCROSSING"
   2-Letter Words (18 found)
   3-Letter Words (78 found)
   9-Letter Words (5 found)
   10-Letter Words (1 found)
   11-Letter Words (1 found)