(Translated by https://www.hiragana.jp/)
bolt from the blue - Wiktionary, the free dictionary

bolt from the blue

English

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Etymology

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Suggesting a thunderbolt from a clear sky.

Noun

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bolt from the blue (plural bolts from the blue)

  1. A complete surprise; something totally unexpected.
    Coordinate terms: act of God, accident
    His death came as a bolt from the blue.

Translations

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See also

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