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English definition of “opinion”

opinion

noun uk   /əˈpɪn.jən/ us  
B1 [C] a thought or belief about something or someone: What's your opinion about/on the matter? People tend to have strong opinions on capital punishment. He didn't express/give an opinion on the matter. Who, in your opinion, (= who do you think) is the best football player in the world today? He's very much of the opinion that alternative medicine is a waste of time. B2 [U] the thoughts or beliefs that a group of people have: Eventually, the government will have to take notice of public opinion. There is a diverse range of opinion on the issue. There was a difference of opinion as to the desirability of the project. Opinion is divided as to whether the treatment actually works. Both performances were excellent, it's simply a matter of opinion as to whose was better. B1 [C] a judgment about someone or something: Her opinion of Adam changed after he'd been so helpful at the wedding. She has a good/high opinion of his abilities (= thinks he is good). I have a rather bad/low/poor opinion of my sister's boyfriend (= I do not like or approve of him). He has a very high opinion of himself (= thinks he is very skilled/clever in a way that is annoying). B1 [C] a judgment made by an expert: My doctor has referred me to a specialist for a second opinion on the results of my blood test.
(Definition of opinion from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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