Is OON a valid Scrabble word?
YES — OON is a valid Scrabble word 3 points
Scrabble® and Words With Friends® points for OON
OON is a valid Scrabble US/CAN word worth 3 points:
O1O1N1
OON is valid in Scrabble UK (World) —
O1O1N1
OON is not valid in Words With Friends.