jump in - definition and synonyms

phrasal verb [intransitive]
present tense
I/you/we/theyjump in
he/she/itjumps in
present participlejumping in
past tensejumped in
past participlejumped in
  1. 1
    to become involved in a situation very quickly

    Onlookers jumped in to break up the fight.

    1. a.
      jump in with both feet to become involved in something without thinking carefully about it
    2. b.
      jump in at the deep end to become involved in a very difficult situation
See also main entry: jump