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
He was identified by his son as Donald Fuchs and was one day away from celebrating his 85th birthday, according to KSDK.
—
Mike Stunson, Kansas City Star, 29 Jan. 2025
James had even posted a restaurant review from their trip to London on Jan. 15, one day before the pair broke up.
—Sabrina Weiss, People.com, 29 Jan. 2025
But in December, one day before the statute of limitations expired, Edison handed over the fault data, the plaintiffs claimed.
—Noah Goldberg, Los Angeles Times, 28 Jan. 2025
Rivero’s son Lazaro, who will one day take over the family business, introduced his father to the environmental benefits of aquamation a couple of years back.
—Collin Blinder, The Mercury News, 28 Jan. 2025
See all Example Sentences for one day 
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Mike Stunson, Kansas City Star, 29 Jan. 2025
James had even posted a restaurant review from their trip to London on Jan. 15, one day before the pair broke up.
—Sabrina Weiss, People.com, 29 Jan. 2025
But in December, one day before the statute of limitations expired, Edison handed over the fault data, the plaintiffs claimed.
—Noah Goldberg, Los Angeles Times, 28 Jan. 2025
Rivero’s son Lazaro, who will one day take over the family business, introduced his father to the environmental benefits of aquamation a couple of years back.
—Collin Blinder, The Mercury News, 28 Jan. 2025
See all Example Sentences for one day
Dictionary Entries Near one day
Cite this Entry
“One day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/one%20day. Accessed 2 Feb. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share