Is UM a valid Scrabble word?
YES — UM is a valid Scrabble word 4 points
Scrabble® and Words With Friends® points for UM
UM is a valid Scrabble US/CAN word worth 4 points:
U1M3
UM is valid in Scrabble UK (World) —
U1M3
UM is a valid Words With Friends word worth 6 points:
U2M4