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join in

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phrasal verb [intransitive/transitive]
Word Forms
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present tense
I/you/we/theyjoin in
he/she/itjoins in
present participlejoining in
past tensejoined in
past participlejoined in
  1. join in something to do an activity with people who are already doing it

    She laughed and Tom joined in.

    Pat didn’t feel like joining in the celebrations.

    Thesaurus entry for this meaning of  join inThesaurus entry for this meaning of join in

This is the British English definition of join in. View American English definition of join in.

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