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
The Budget Committee vote on Wednesday came one day after the City Council Finance Committee voted the advanced the alternative budget plan.
—
Todd Feurer, CBS News, 18 Dec. 2025
In practicality, this wonky-sounding piece of legislation will mean boaters and anglers interested in recreating on a federal river or lake will one day be able to find that information easily from their phones or computers.
—Christine Peterson, Outdoor Life, 18 Dec. 2025
At the time, Conlin remembers sensing that Newton would one day be her maid of honor.
—Ashlyn Robinette, PEOPLE, 18 Dec. 2025
It was registered near Little Lake, one day ago.
—Ca Earthquake Bot, Sacbee.com, 18 Dec. 2025
See All Example Sentences for one day
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Todd Feurer, CBS News, 18 Dec. 2025
In practicality, this wonky-sounding piece of legislation will mean boaters and anglers interested in recreating on a federal river or lake will one day be able to find that information easily from their phones or computers.
—Christine Peterson, Outdoor Life, 18 Dec. 2025
At the time, Conlin remembers sensing that Newton would one day be her maid of honor.
—Ashlyn Robinette, PEOPLE, 18 Dec. 2025
It was registered near Little Lake, one day ago.
—Ca Earthquake Bot, Sacbee.com, 18 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 26 Dec. 2025.
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