assuming

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

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

"He assumed an air of indifference"

"The foster parents are assuming responsibility for the child's care and well-being. "

"My friend is assuming the role of team leader for the school project. "

"My decision to walk to work was based on the assuming that it wouldn't rain. "

"Her assuming tone and dismissive hand gestures made it clear she thought her ideas were superior to everyone else's. "