out of the blue

Idioms  

1. see out of a clear blue sky.

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Example Sentences

Mary Harris: Let’s talk about the lead-up to what’s happening now, because as you said in your reporting, this didn’t come out of the blue.

From Slate • Mar. 2, 2026

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 • Feb. 7, 2026

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

From The Wall Street Journal • Feb. 4, 2026

Do you ever send him a message out of the blue?

From Los Angeles Times • Jan. 8, 2026

Her mom had shown up out of the blue and pulled Eleanor out of class, all "Get your things, you're coming home."

From "Eleanor & Park" by Rainbow Rowell