OUTRIVALS is a playable word

outrival Scrabble® Dictionary

verb
outrivaled, outrivaling, outrivals or outrivalled, outrivalling, outrivals
to outdo in a competition or rivalry
356 Playable Words can be made from "OUTRIVALS"
   2-Letter Words (20 found)
   8-Letter Words (2 found)
   9-Letter Words (1 found)