blow up - definition and synonyms

phrasal verb
present tense
I/you/we/theyblow up
he/she/itblows up
present participleblowing up
past tenseblew up
past participleblown up
  1. 1
    [intransitive/transitive] if something blows up, or if someone blows something up, it explodes and is destroyed

    The boiler blew up, wrecking the whole house.

  2. 2
    [transitive] to fill something with air or gas

    We blew up lots of balloons and hung them around the room.

  3. 3
    [intransitive] if a storm or strong wind blows up, it suddenly starts

    The race had to be cancelled when the storm blew up.

  4. 4
    [intransitive] if a serious argument or problem blows up, it begins suddenly

    A political row has blown up over the minister’s remarks.

  5. 5
    [intransitive] to suddenly become angry and shout at someone
    blow up at:

    She just blew up at me.

     Synonyms and related words
  6. 6
    [transitive] to make a photograph bigger

    They had blown up the picture to make a huge poster of his face.

  7. 7
    blow up in someone’s face informal if your plans blow up in your face, they do not happen as you expected and cause a lot of problems
See also main entry: blow