Out of the Blue

What Does "Out of the Blue" Mean?

"Out of the blue" is an English idiom. It means "sudden and unexpected; occurring without warning or prior notice."

Here are three examples of the idiom "out of the blue" used in a sentence:

His phone call out of the blue surprised her, as they hadn't spoken in years.
The idea for the new project came to her out of the blue while she was in the shower.
The unexpected gift arrived out of the blue and brightened her day.

You now know what "out of the blue" means, but are you good at English idioms? Let's see!

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