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English definition of “jealousy”

jealousy

noun [C or U] uk   /ˈdʒel.ə.si/ us  
C1 a feeling of unhappiness and anger because someone has something or someone that you want: He broke his brother's new bike in a fit of jealousy. She was consumed by/eaten up with jealousy (= she was very jealous) when she heard that he had been given a promotion. The team has performed very badly this season due to petty jealousies (= feelings of jealousy about unimportant things) among the players.
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Envy and jealousy
(Definition of jealousy from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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