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

Wednesday's army takeover came one day before provisional results had been expected to be announced in the race between Embalo and Fernando Dias, a 47-year-old political newcomer who had emerged as Embalo's top challenger to run the West African state, which is a hub for cocaine trafficking. —Reuters, NBC news, 27 Nov. 2025

Lane Kiffin is just one day away from potentially coaching his final game for the Ole Miss Rebels. —Andrew McCarty, MSNBC Newsweek, 27 Nov. 2025

The family's fate changed when King Edward VIII abdicated in 1936 and his younger brother acceded to the throne, putting the firstborn Princess Elizabeth on the path to reign one day. —Janine Henni, PEOPLE, 27 Nov. 2025

When a holiday falls on a weekday, the company said, trash pickups for the remainder of the week are delayed by one day. —Angela Rodriguez, Sacbee.com, 26 Nov. 2025

Rhymes for one day

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