If something happens out of the blue, it is a) unexpected b) creative

out of the blue

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Meaning: If something happens out of the blue, you're not expecting it to happen and you're surprised when it does.

For example:

• A letter came today, totally out of the blue, from a lawyer who said that an uncle I hadn't heard from in years had died and left me a million dollars. But then my alarm went off ... and I woke up.
  
• A girl Barry had known years ago called him out of the blue and invited him to her wedding. He was very surprised, as you can imagine.
  

Quick Quiz:

The economic crash came out of the blue. Nobody

had predicted it had minded it had understood it englishclub.com

Click for answera.