STRUM is a playable word

strum Scrabble® Dictionary

verb
strummed, strumming, strums
to play a stringed instrument by running the fingers lightly across the strings
21 Playable Words can be made from "STRUM"
   2-Letter Words (4 found)
   3-Letter Words (8 found)
   4-Letter Words (8 found)
   5-Letter Words (1 found)