out of the blue

Idioms  

1. see out of a clear blue sky.

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Example Sentences

But the news also came out of the blue for hundreds of creatives who were working on projects in and around the building.

From BBC

Cathy said Kirsty, who was working as a glamour model, had been in a relationship with another man but had announced almost out of the blue that she was going to marry someone called Paul.

From BBC

"Until one day out of the blue there came a wonderfully clever and inspired new text by Julia," he said.

From BBC

The drop this week isn’t completely out of the blue.

From The Wall Street Journal

Then, out of the blue, Shannon got in touch.

From BBC