Meaning of “sour grapes” in the English Dictionary

british dictionary

"sour grapes" in British English

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sour grapes

If you describe someone's behaviour or opinion as sour grapes, you mean that that person is angry because they have not got or achieved something that they wanted:

I don't think it's such a great job - and that's not just sour grapes because I didn't get it.

(Definition of “sour grapes” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"sour grapes" in American English

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sour grapesnoun [ U ]

/ˈsɑʊər ˈɡreɪps/

bad behavior that happens because someone else is more successful:

Are his criticisms justified, or is this a case of sour grapes from a less successful artist?

(Definition of “sour grapes” from the Cambridge Academic Content Dictionary © Cambridge University Press)