Is “Assumes” a Scrabble word?

1.To authenticate by means of belief; to surmise; to suppose to be true, especially without proof

“We assume that, as her parents were dentists, she knows quite a bit about dentistry.”

2.To take on a position, duty or form

“Mr. Jones will assume the position of a lifeguard until a proper replacement is found.”

3.To adopt a feigned quality or manner; to claim without right; to arrogate

“He assumed an air of indifference”