one day

idiom

: 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.

: 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 wombat walker will work for just one day at a wildlife park in Bicheno, a town on Tasmania’s east coast. —

Sarah Kuta, Smithsonian Magazine, 27 June 2024 The auction will be available to shop in-person at the Rocket Man Resale in-store (51 8th Avenue, New York, New York) for one day only on June 27 from 2 p.m. to 6 p.m. —

Catherine Santino, Peoplemag, 27 June 2024 And the lyrics follow suit as Prince disputes the devil claiming that another mountain would appear every time somebody broke his lover’s heart and the sea would one day overflow with all her tears. —

Ed Masley, The Arizona Republic, 27 June 2024 Priority's Zionsville customers will not have trash pickup on July 4 and will also be delayed one day. —

Chris Sims, The Indianapolis Star, 25 June 2024 See all Example Sentences for one day

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'one day.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.