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English definition of “opinion”

opinion

noun [C/U]  /əˈpɪn·jən/ us  
the ideas that a person or a group of people have about something or someone, which are based mainly on their feelings and beliefs, or a single idea of this type: [C] When you're a teenager you've got strong opinions on/about everything. [C] McGuinness was expressing his personal opinion. [U] Her writings influenced public opinion. [C] I think you’re wrong, though you’re certainly entitled to your opinion.
(Definition of opinion from the Cambridge Academic Content Dictionary © Cambridge University Press)
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