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English definition of “identity”

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identity

noun [C or U] uk   /aɪˈden.tɪ.ti/ us    /-ə.t̬i/
B2 who a person is, or the qualities of a person or group that make them different from others: The man's identity was being kept secret while he was helping police with enquiries. I cannot reveal the identity of my source. The informant was given a new identity (= a different name and new official documents) for protection. The newspaper photo apparently showed him in Rome but it was a case of mistaken identity (= it was the wrong person). In prison people often suffer from a loss of identity. I think my job gives me a sense of identity.
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(Definition of identity from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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