SCRUM is a playable word

scrum Scrabble® Dictionary

verb
scrummed, scrumming, scrums
to engage in a scrummage (a formation around the ball in rugby)
15 Playable Words can be made from "SCRUM"
   2-Letter Words (3 found)
   3-Letter Words (7 found)
   4-Letter Words (4 found)
   5-Letter Words (1 found)