Is POS a valid Scrabble word?
YES — POS is a valid Scrabble word 5 points
Scrabble® and Words With Friends® points for POS
POS is a valid Scrabble US/CAN word worth 5 points:
P3O1S1
POS is valid in Scrabble UK (World) —
P3O1S1
POS is not valid in Words With Friends.