Is ISOS a valid Scrabble word?
YES — ISOS is a valid Scrabble word 4 points
Scrabble® and Words With Friends® points for ISOS
ISOS is a valid Scrabble US/CAN word worth 4 points:
I1S1O1S1
ISOS is valid in Scrabble UK (World) —
I1S1O1S1
ISOS is not valid in Words With Friends.