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English definition of “fantasize”

fantasize

verb [I or T] uk (UK usually fantasise)   /ˈfæn.tə.saɪz/ us  
to think about something very pleasant that is unlikely to happen: He fantasized about winning the Nobel Prize. [+ that] As a child, Emma fantasized that she would do something heroic.Dreaming
(Definition of fantasize from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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