one day

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one day

adverb

  1. At some unspecified time in the future. One day I shall upgrade my software, but not just yet.

    Similar: one of these days, some day

  2. At some unspecified time in the past. One day I was playing with a girl from my class.

    Similar: once

  3. Used other than figuratively or idiomatically: see one, day. You can stay one day or two.

    Similar: byembye, hereafter, in the future, later, later on, one day, one of these days, one of these fine days, someday, sooner or later

Opposite: currently, long ago

Thesaurus

adverb

Opposite: currently, long ago

Translations

Every language

adv at unspecified time in the future

Españolalgún día
한국어언젠가 eonjen'ga
日本語いつか itsuka
中文某一天 mǒu yī tiān, 有一天 yǒu yī tiān, 一天 yī tiān
हिन्दीएक दिन ek din
Portuguêsalgum dia
Françaisun jour
Deutscheines Tages
Italianoun giorno o l'altro
Ελληνικάκάποια μέρα kápoia méra
Românăîntr-o zi
Русскийодна́жды odnáždy, когда́-нибу́дь kogdá-nibúdʹ, когда́-то kogdá-to
العربيةمَرَّةً marratan, يَوْمًا yawman

adv at unspecified time in the past

한국어어느 날 eoneu nal, 하루는 haruneun
日本語ある日 aru hi
中文一天 yī tiān
Portuguêsuma vez, um dia
Françaisun jour
Deutscheines Tages
Italianouna volta
Ελληνικάκάποτε kápote
Românăîntr-o zi
Русскийодна́жды odnáždy, когда́-то kogdá-to, ка́к-то kák-to
العربيةفِي يَوْمٍ مِنَ ٱلْأَيَّامِ fī yawmin mina l-ʔayyāmi

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MLA

"one day." Wiktionary, via Micwyn, micwyn.com/word/one%20day. Accessed 6 Nov. 2026.

APA

one day. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/one%20day

Chicago

"one day." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/one%20day.

BibTeX
@misc{one_day_2026,
  title = {one day},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/one%20day},
  urldate = {2026-11-06}
}