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English definition of “preoccupation”

preoccupation

noun uk   /priːˌɒk.jʊˈpeɪ.ʃən/ us    /-ˌɑː.kjuː-/
[C] an idea or subject that someone thinks about most of the time: My main preoccupation now is trying to keep life normal for the sake of my two boys. [C or U] the state of being worried about or thinking about something most of the time: Lately, his preoccupation with football had caused his marks at school to slip.
(Definition of preoccupation from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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