one day
idiom
1
: at some time in the future
One day, it'll happen. You'll see.
People may one day be able to take vacations to the moon.
2
: on a day in the past
I went to her house one day and had lunch with her.
One day, we had a terrible argument.
Examples of one day in a Sentence
Recent Examples on the Web
Joanne can tell there’s trouble when the woman who may one day become her sister-in-law shows up to a double date with bangs.
—
Judy Berman, Time, 23 Oct. 2025
So one day last winter, as a new MLS season began, Higginbotham’s wife, Nicole, approached him with an idea.
—Rustin Dodd, New York Times, 23 Oct. 2025
These spheres could one day serve as living and working spaces for astronauts.
—Kurt Knutsson, FOXNews.com, 23 Oct. 2025
After church one day, Kraemer told Telgenhof that her dream was to open a coffee shop inside of Midvintec.
—Cathy Kozlowicz, jsonline.com, 23 Oct. 2025
See All Example Sentences for one day
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Judy Berman, Time, 23 Oct. 2025
So one day last winter, as a new MLS season began, Higginbotham’s wife, Nicole, approached him with an idea.
—Rustin Dodd, New York Times, 23 Oct. 2025
These spheres could one day serve as living and working spaces for astronauts.
—Kurt Knutsson, FOXNews.com, 23 Oct. 2025
After church one day, Kraemer told Telgenhof that her dream was to open a coffee shop inside of Midvintec.
—Cathy Kozlowicz, jsonline.com, 23 Oct. 2025
See All Example Sentences for one day
Cite this Entry
“One day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/one%20day. Accessed 26 Oct. 2025.
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