out of the blue

Something that happens with no warning at all.

"Out of the blue, she called me after five years of silence."

Hear it in context

How did Earth form?: Crash Course Geology #2

CrashCourse · 7:05

out of the blue.

“Get over it”, “hook up”, “blow away”: 10 Everyday English Expressions

Adam’s English Lessons · engVid · 2:48

Basically, start suddenly, out of the blue.

What kids know about motivation (and we don't) | Betsy Blackard | TEDxClaremontGraduateUniversity

TEDx Talks · 13:14

a thought struck me, out of the blue:

Charles "AIR" Jourdain

UFC · 27:37

Black for Andre Ule out of the blue

Britain & Ireland Tours with Lisa Friend & Charlie Rawson

Rick Steves Travel Talks · 78:51

Out of the Blue and then walking four

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