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English definition of “illegitimate”

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illegitimate

adjective [not gradable]  /ˌɪl·ɪˈdʒɪt̬·ə·mət/ us  
born of parents not married to each other: an illegitimate child Illegitimate can also mean not legal: an illegitimate ruler
(Definition of illegitimate from the Cambridge Academic Content Dictionary © Cambridge University Press)
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