out of the blue Meaning, Definition & Usage

  1. adjective satellite not anticipated
    unforeseen; unlooked-for; unanticipated.
    • unanticipated and disconcerting lines of development"- H.W.Glidden
    • unforeseen circumstances
    • a virtue unlooked-for in people so full of energy
    • like a bolt out of the blue
  2. adverb in a way that was not expected
    unexpectedly.
    • her brother showed up at the wedding out of the blue

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