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balloon - definition and synonyms

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verb [intransitive] balloon pronunciation in British English /bəˈluːn/
Word Forms
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present tense
I/you/we/theyballoon
he/she/itballoons
present participleballooning
past tenseballooned
past participleballooned
  1. 1
    to become larger and rounder in shape
    Her coat ballooned round her in the wind.
    Synonyms and related words
  2. 2
    to increase very quickly in amount or degree
    Our expenses had ballooned.
    Within weeks, the fighting had ballooned into full-scale war.

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