UNDERRUNS is a playable word

underrun Scrabble® Dictionary

verb
underran, underrunning, underruns
to pass or extend under
100 Playable Words can be made from "UNDERRUNS"
   2-Letter Words (10 found)
   3-Letter Words (23 found)
   6-Letter Words (10 found)
   7-Letter Words (1 found)
   8-Letter Words (1 found)
   9-Letter Words (1 found)