flash - definition and synonyms


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  1. 1
    [countable] a bright light that appears for a very short time

    a flash of lightning

    The bomb exploded with a blinding flash.

    1. a.
      a bright colour that you see for a very short time

      The little bird swooped down with a flash of blue.

  2. 2
    [countable] a sudden understanding or idea
    a flash of inspiration/insight/brilliance etc:

    It’s a dull book but there are occasional flashes of insight.

  3. 3
    [countable] a sudden instance of a particular emotion
    flash of:

    a flash of anger/humour/panic

  4. 4
    [singular] the sudden appearance of an object for a very short time

    the flash of a knife

  5. 5
    [uncountable] informal, showing disapproval behaviour that is intended to impress other people by showing them how rich you are