then one day

USAGE SUMMARY

'then one day' is correct and usable in written English.
It is typically used to introduce a new or unexpected event in a narrative, usually a turning point in the story. Example sentence: For years, Sarah had been struggling to build a successful business, but then one day she had a stroke of genius that would change her life.

✓ Grammatically correct

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Then one day, he stopped.

The Guardian - Opinion

Then one day something clicked.

The Guardian - Opinion

Then one day enlightenment occurred.

The New York Times - Travel

Then, one day, it clicked.

The Guardian

Then one day we can't.

The Guardian - Books

Then one day he did.

The New York Times

Then, one day, Borne speaks.

The New Yorker

Then one day it changed.

The Guardian

Then one day, a gift arrived.

Princeton University

Then one day it was over.

Harvard Business Review

Then, one day, it was gone.

The New Yorker

Expert writing Tips

Best practice

Use "then one day" to signal a significant shift or turning point in your narrative. It effectively creates anticipation and marks a clear division between what was and what will be.

Common error

Avoid starting multiple consecutive sentences or paragraphs with "then one day". This can make your writing repetitive and predictable. Vary your sentence structure to maintain reader engagement.

Linguistic Context

The phrase "then one day" functions as an adverbial phrase, primarily used to introduce a change or turning point in a narrative. It sets the stage for an unexpected event or a significant shift in the story, as illustrated by Ludwig examples.

Expression frequency: Very common

Frequent in

News & Media

100%

Less common in

Formal & Business

0%

Science

0%

Academia

0%

Ludwig's WRAP-UP

In summary, "then one day" is a versatile adverbial phrase used to introduce a turning point or unexpected event within a narrative. As Ludwig AI confirms, it is grammatically sound and frequently used, particularly in news and media contexts. To enhance your writing, use this phrase to create anticipation or signal a shift, but avoid overuse to prevent repetitiveness. Alternatives such as "suddenly" or "eventually" can add variety. By following these guidelines, you can effectively use "then one day" to improve your storytelling.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

suddenly one day

Indicates a rapid and abrupt change or occurrence.

eventually one day

Highlights the passage of time and the eventual occurrence of an event.

subsequently one day

Indicates a later point in time, suggesting a direct consequence or sequence of events.

unexpectedly one day

Emphasizes the surprise element of an event, suggesting it was not anticipated.

out of the blue one day

Stresses the complete lack of warning or predictability of an event.

as it happened one day

Introduces an event as it unfolded, often implying chance or circumstance.

it so happened one day

Similar to 'as it happened', but with a slightly more formal tone.

in due course one day

Suggests an event occurred after a certain period, fitting into a natural progression.

in the fullness of time one day

Emphasizes the eventual and perhaps inevitable occurrence of an event.

in the end one day

Highlights the final outcome or resolution after a period of time or events.

FAQs

How can I use "then one day" in a sentence?

The phrase "then one day" is used to introduce a turning point or unexpected event in a story. For example, "She worked tirelessly for years, and "then one day", her efforts finally paid off."

What are some alternatives to using "then one day"?

Alternatives to "then one day" include phrases like "suddenly", "unexpectedly", or "eventually", depending on the specific nuance you want to convey.

Is it grammatically correct to start a sentence with "then one day"?

Yes, it is grammatically correct to start a sentence with "then one day". It functions as an adverbial phrase, modifying the verb and indicating time.

What's the difference between "finally one day" and "then one day"?

"Finally one day" suggests that the event was long-awaited or overdue, whereas "then one day" simply indicates a shift or change without necessarily implying anticipation.