The prevailing doctrine or generally accepted view; consensus.

The principle of international law where states believe or accept that a practice exists and must be followed because of a rule of law requiring it, to the extent that it becomes part of the body of norms known as international Customary Law.

A belief, judgment or perspective that a person has formed, either through objective or subjective reasoning, about a topic, issue, person or thing.

(transitive, archaic) To have or express as an opinion.

(law) An opinion which follows the outcome of the majority of the court, but might be reached in a differing manner.

simple past tense and past participle of opinionate

Having very strong opinions. / Holding to one's own opinion obstinately and unreasonably.

The opinion of the public, the popular view.

plural of opinion

Third-person singular simple present indicative form of opinion