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
On July 22, Jennifer Lopez paired them with a feminine dress while vacationing in Italy, and just one day prior, Jennifer Lawrence styled them similarly while walking around New York City.
—
Alyssa Grabinski, People.com, 28 July 2025
Left-hander Matthew Boyd’s spot in the rotation was pushed back one day to align him to get the ball in a big series this week in Milwaukee.
—Meghan Montemurro, Chicago Tribune, 27 July 2025
Track how long tasks actually take Try time-tracking for just one day.
—Luciana Paulise, Forbes.com, 26 July 2025
The freeze began June 30, just one day before the grants were expected to arrive.
—Miami Herald, 26 July 2025
See All Example Sentences for one day
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Alyssa Grabinski, People.com, 28 July 2025
Left-hander Matthew Boyd’s spot in the rotation was pushed back one day to align him to get the ball in a big series this week in Milwaukee.
—Meghan Montemurro, Chicago Tribune, 27 July 2025
Track how long tasks actually take Try time-tracking for just one day.
—Luciana Paulise, Forbes.com, 26 July 2025
The freeze began June 30, just one day before the grants were expected to arrive.
—Miami Herald, 26 July 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 5 Aug. 2025.
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