be of the opinion that

be of the opinion that

To have a particular belief, thought, or view. My mom is of the opinion that people should buy homes instead of renting, but I just don't have that kind of money for a down payment.

See also: of, opinion, that

be of the opinion that...

(formal) think or believe that...: I’m firmly of the opinion that smoking should be banned in all public places.

See also: of, opinion