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 president downplayed the criticism within his party over the agreement, which would supply the United States and global marketplaces with diesel equivalent to only a little more than one day of global demand. — Ramsey Touchberry, The Washington Examiner, 15 Oct. 2026

These molecules form part of the chemical inventory that ultimately builds planets and, perhaps, even life that will one day live on those planets. — Keith Cooper, Space.com, 15 Oct. 2026

Philadelphia Phillies president of baseball operations Dave Dombrowski spoke at his end-of-season press conference Thursday morning, just one day after naming Don Mattingly the full-time manager. — Frederick Sutton Sinclair, CBS News, 15 Oct. 2026

Those who claimed they were duped by McDonnell hope she will one day be held accountable. — Cheyenne Roundtree, Rolling Stone, 15 Oct. 2026

Rhymes for one day

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