1a view or judgement formed about something, not necessarily based on fact or knowledge:that, in my opinion, is rightthe area’s residents share vociferous opinions about the future
[mass noun] the beliefs or views of a group or majority of people:the changing climate of opinion
an estimation of the quality or worth of someone or something:I had a higher opinion of myself than I deserved
2a statement of advice by an expert on a professional matter:if in doubt, get a second opinion
Law a barrister’s advice on the merits of a case:the solicitor took counsel’s opinion
Law a formal statement of reasons for a judgement given:a dissenting opinion adjudged that the government had the right to protect ‘the symbolic value of the flag’
be of the opinion that
believe or maintain that:the complainant being of the opinion that this provided grounds for legal proceedings
difference of opinion
a disagreement or mild quarrel:there was a difference of opinion between myself and the chief planner
a matter of opinion
something not capable of being proven either way:relativism tends to regard different beliefs as just a matter of opinion