# one day

idiom · CEFR A1

Source: https://englishreference.com/idiom/one-day
Updated: 2026-04-22

## Meaning

A phrase used to talk about a time in the future that isn't specific. It can also mean a particular day in the past when you are telling a story.

## Examples

- I hope to visit Japan one day.
- One day, she decided to leave her small town and move to the big city to start a new career.
- He often gazed at the horizon, dreaming that one day he would finally see the world beyond the mountains he had known his entire life.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.