join in - definition and synonyms

phrasal verb [intransitive/transitive]
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.

See also main entry: join