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
However, McCoy and team believe there is no need to get ahead and opt in to taking the season one day at a time.
—
Justin Vigil Zuniga, Daily News, 25 Jan. 2026
Judge Elizabeth Dunigan sentenced Caruso to three years and one day in state prison to be followed by two years of probation.
—Flint McColgan, Boston Herald, 25 Jan. 2026
Wine does not respond well to being 60°F one day and 75°F the next.
—Emily Price, Forbes.com, 25 Jan. 2026
Neighborhood chat channels document how friends, coworkers and schoolchildren were here one day and gone the next.
—Alicia Wallace, CNN Money, 24 Jan. 2026
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.
Justin Vigil Zuniga, Daily News, 25 Jan. 2026
Judge Elizabeth Dunigan sentenced Caruso to three years and one day in state prison to be followed by two years of probation.
—Flint McColgan, Boston Herald, 25 Jan. 2026
Wine does not respond well to being 60°F one day and 75°F the next.
—Emily Price, Forbes.com, 25 Jan. 2026
Neighborhood chat channels document how friends, coworkers and schoolchildren were here one day and gone the next.
—Alicia Wallace, CNN Money, 24 Jan. 2026
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 Jan. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
