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English definition of “join in (sth)”

join in (sth)

verb uk phrasal verb with join   /dʒɔɪn/ us  
B1 to become involved in an activity with other people: We only need one more player for this game - can you persuade your sister to join in? At the end of this verse, we'd like everyone to join in with the chorus.Taking part and getting involvedGetting involved for one's own benefit or against others' will
(Definition of join in (sth) from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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