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Surprise Idioms

“Out Of the Blue” Meaning, Origin and Examples

The idiom “out of the blue” is used by nearly every native English speaker to describe certain situations. If you have heard someone mention this phrase and didn’t understand it, that is most likely what bought you to this page. Thank goodness it did because here you will find all you need to know. Below you will see the meaning of this phrase, information about its origin, and some example sentences and conversations to help you better understand the phrase seeing it used in context. Lastly, you will also discover some words or phrases that can be used instead of using the phrase “out of the blue.”

“Out Of the Blue” Meaning, Origin and Usage

Key Takeaways

  • The phrase “out of the blue” means something happening unexpectedly, without any warning or prior indication. It suggests a surprise or an event that occurs suddenly and catches someone off guard.
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Out Of the Blue – Created by 7ESL

“Out Of The Blue” Meaning

The phrase “out of the blue” means something that happens unexpectedly or without any warning. It describes an event or situation that comes as a surprise, often catching someone off guard.

Examples:

  • “She called me out of the blue after not hearing from her for years.”
  • “The news of the merger came out of the blue and left everyone shocked.”

Origin of this Idiomatic Phrase

The idiom “out of the blue” evolved from an older idiom. The older idiom used was “a bolt from the blue” or “a bolt out of the blue.” This phrase related a situation to a lightning bolt appearing suddenly from a clear blue sunny sky when it was not expected. Over time and usage, the old idiom was shortened to the phrase “out of the blue” that we use today.

Usage of “Out Of The Blue” 

  • Describing an unexpected phone call:

“He contacted me out of the blue after years of no communication.”

  • Talking about a surprising event:

“The job offer came out of the blue; I wasn’t even actively looking for a new position.”

  • In a casual conversation:

“She showed up at my doorstep out of the blue, and I was completely surprised.”

  • Referring to an unexpected decision:

“Out of the blue, they decided to move to another country.”

  • Out of nowhere – something that appears suddenly and without warning.
  • Unexpectedly – occurring without prior notice or anticipation.
  • From left field – an unexpected or surprising occurrence, often used in sports to describe an unforeseen play.
  • Out of the clear blue sky – a variation emphasizing a sudden and unanticipated event.
  • By surprise – something happening unexpectedly or catching someone off guard.
  • Suddenly – occurring quickly and unexpectedly.
  • Without warning – happening without any prior indication or notice.
  • Like a bolt from the blue – a sudden and unexpected event that is shocking.
  • Caught off guard – surprised or unprepared for something unexpected.
  • Out of sight – a phrase that can imply something is not anticipated because it is not visible or known.

Alternatives to “Out Of The Blue”

There are several words and phrases that you can use that would be synonymous with the idiom “out of the blue.” Some of the alternatives that you could use to replace this phrase include:

  • Suddenly
  • Unexpectedly
  • All of a sudden

“Out Of The Blue” Examples

Example Sentences

  • The idea came from her out of the blue and she put it to good use.
  • Like a bolt of lightning from an otherwise clear sky, the stranger appeared out of the blue.
  • Completely out of the blue, she got a letter from her long-lost cousin in New York.
  • Symptoms of the disease often appear out of the blue.
  • They just came around, out of the blue, to try and hurt me.
  • The Guardian, in its wisdom, plucks out of the blue a figure of £200 million.
  • She told me, out of the blue, that she was going to live in New York.

Example Conversations

A discussion between father and son.

  • Father: I think I should take your mother on a vacation.
  • Son: What made you think of that out of the blue.
  • Father: I don’t know. It just seems like she could use a break.
  • Son: I agree. She works too hard.

A conversation between two co-workers.

  • Co-worker 1: We need to come up with a plan and quick.
  • Co-worker 2: Agreed. Unless someone comes up with a good idea out of the blue we are screwed.
  • Co-worker 1: Well, let’s put our heads together and I am sure we can come up with something.
B1 Knowledge Check · 5 questions

“Out Of the Blue” Meaning, Origin and Examples — Practice Quiz

1 / 5
Q1

Question 1: What does the idiom "out of the blue" mean?

Question 1 options
"Out of the blue" means something happening unexpectedly or without any warning, catching someone by surprise.
Q2

Question 2: The idiom "out of the blue" originated from the older phrase "a storm out of the blue."

Question 2 options
This is false. The idiom evolved from the older phrase "a bolt from the blue" or "a bolt out of the blue," which compared a surprising event to a lightning bolt appearing from a clear blue sky — not a storm.
Q3

Question 3: Which sentence uses "out of the blue" correctly?

Question 3 options
"My old friend called me out of the blue after ten years" correctly uses the idiom to describe an unexpected event. The other sentences misuse it to describe planned, predictable, or gradual situations, which contradicts the meaning of something happening without warning.
Q4

Question 4: Match each expression to its description.

Question 4 options
Out of the blue
From left field
Caught off guard
Without warning
Surprised or unprepared for something
Happening with no prior indication or notice
Something happening unexpectedly, like lightning from a clear sky
An unforeseen occurrence, often linked to sports

Select an item on the left, then tap its match on the right.

"Out of the blue" means something happening unexpectedly. "From left field" describes an unforeseen occurrence often linked to sports. "Caught off guard" means being surprised or unprepared. "Without warning" means happening with no prior indication.
Q5

Question 5: Completely ___ the blue, she got a letter from her long-lost cousin in New York.

Question 5 options
The correct phrase is "out of the blue," meaning the letter arrived unexpectedly. The word "out of" fills the blank to complete this well-known idiom.

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