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
Ian St John and Steve Staunton were among the visitors one day.
—
Daniel Taylor, New York Times, 24 Dec. 2025
Lee made it to day 59 before being evicted — about the middle of the pack, and one day before franchise fan-favorite Rachel Reilly was also sent home.
—Ryan Coleman, Entertainment Weekly, 23 Dec. 2025
The Daily Mail reported that friends of the family held a private memorial service a day after news broke, in a nod to Jewish tradition that a funeral should be held within one day of the death itself.
—Stylecaster Editors, StyleCaster, 23 Dec. 2025
Her dream is to one day run her own daycare center.
—Miami Herald, 23 Dec. 2025
See All Example Sentences for one day
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Daniel Taylor, New York Times, 24 Dec. 2025
Lee made it to day 59 before being evicted — about the middle of the pack, and one day before franchise fan-favorite Rachel Reilly was also sent home.
—Ryan Coleman, Entertainment Weekly, 23 Dec. 2025
The Daily Mail reported that friends of the family held a private memorial service a day after news broke, in a nod to Jewish tradition that a funeral should be held within one day of the death itself.
—Stylecaster Editors, StyleCaster, 23 Dec. 2025
Her dream is to one day run her own daycare center.
—Miami Herald, 23 Dec. 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 31 Dec. 2025.
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