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

Just one day before the Miami Heat’s regular-season opener, two-time NBA MVP Giannis Antetokounmpo spoke about the perspective needed during a long 82-game regular season. — Anthony Chiang, Miami Herald, 22 Oct. 2026

All of that money will go toward researching ultra-rare genetic disorders like Jaxson’s in the hopes of one day finding a cure. — Ciara McCarthy 22, Fort Worth Star-Telegram, 22 Oct. 2026

The the new Sacramento Kings Team Store in Downtown Commons holds its grand opening one day before the King’s home opener this week. — Emma Hall, Sacbee.com, 21 Oct. 2026

Prince George is expected to one day succeed to the throne that his great-grandmother, Queen Elizabeth, reigned over for more than 70 years. — Christopher Luu, InStyle, 21 Oct. 2026

Rhymes for one day

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