OUTRIVALLED is a playable word

outrival Scrabble® Dictionary

verb
outrivaled, outrivaling, outrivals or outrivalled, outrivalling, outrivals
to outdo in a competition or rivalry
736 Playable Words can be made from "OUTRIVALLED"
   2-Letter Words (28 found)
   3-Letter Words (106 found)
   10-Letter Words (1 found)
   11-Letter Words (1 found)