confirm somebody's opinion

"That confirms my bad opinion of humans in general," Eric said.

And your actions just now have served simply to confirm my opinion.

"But I think he'll simply confirm my opinion that this is some kind of passing fad."

Her attitude confirmed his opinion that he was going to be in for a difficult time.

It confirmed her opinion that men should not be allowed to vote.

Which was bound to confirm their poor opinion of our intentions.

"Do you have any specific evidence that confirms his opinion?"

He saw three things in the chamber that confirmed his opinion.

It confirms my already high opinion of her parliamentary talents.

It would only confirm the captain's opinion that he couldn't keep a clear mind on this one.