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    boom off

    US /bum ɔf/

    ・

    UK /bu:m ɒf/

    C2
    phr.v.To make a loud booming noise, like guns or fireworks firing.
    The fireworks boomed off loudly across the city at midnight.

    Video subtitles

    7 Common PHRASAL VERBS for Business

    18:377 Common PHRASAL VERBS for Business
    • Kick, boom, off, away, to start.

      Kick, boom, off, away, to start.

    • Kick, boom, off away to start.

      Kick, boom, off away to start.

    A2