Is SUM a valid Scrabble word?
YES — SUM is a valid Scrabble word 5 points
Scrabble® and Words With Friends® points for SUM
SUM is a valid Scrabble US/CAN word worth 5 points:
S1U1M3
SUM is valid in Scrabble UK (World) —
S1U1M3
SUM is a valid Words With Friends word worth 7 points:
S1U2M4