one day

phrase

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 incident came one day after the DEF CON security conference concluded in Las Vegas, and was first described on social media accounts that follow publicly available air-to-ground messages, known as ACARS. — Cyrus Farivar, ArsTechnica, 12 Aug. 2026

Maresca seems intent on letting his team’s football do the talking, but perhaps one day that will change. — Sam Lee, New York Times, 11 Aug. 2026

Reynolds died in 2016, one day after the death of her daughter, Carrie Fisher. — Madeline Boardman, Entertainment Weekly, 11 Aug. 2026

Going in one day and playing with YG at House of Blues, and the next day playing the Grammys with LL Cool J, and then a few months later playing with Lenny Kravitz and doing the Country Music Awards. — Devon Ivie, Vulture, 11 Aug. 2026

Rhymes for one day

• aaa
• alleyway
• alumnae
• anime
• anyway
• arete
• attache
• axillae
• baa
• beaujolais
• bouvier
• breakaway