day

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day^¹

/deɪ̯/ US, UK
/dæɪ̯/
[dɛɪ̯]

Sounds like Day, dey, Dey · Rhymes with -eɪ

Where it comes from

Inherited from Middle English day, from Old English dæġ, from Proto-West Germanic *dag, from Proto-Germanic *dagaz (“day”), from Proto-Indo-European *dʰegʷʰ- (“to burn”).

Cognates

Cognate with Scots day, dei, dey, dy (“day”), Yola daie, dei, dey, die (“day”), North Frisian dai, doi, däi (“day”), Saterland Frisian Dai (“day”), West Frisian dei (“day”), Bavarian Dåg, Tåg (“day”), Central Franconian Daach (“day”), Cimbrian tag, tage (“day”), Dutch dag, dagge (“day”), German Tag (“day”), German Low German Dag, Dagg (“day”), Limburgish Daach, Daag (“day”), Luxembourgish Dag (“day”), Mòcheno ta (“day”), Vilamovian taog (“day”), West Flemish dag (“day”), Yiddish טאָג (tog, “day”), Danish, Norwegian Bokmål, Norwegian Nynorsk, and Swedish dag (“day”), Faroese and Icelandic dagur (“day”), Norn dagh (“day”), Crimean Gothic tag (“day”), Gothic 𐌳𐌰𐌲𐍃 (dags, “day”), Vandalic *dag- (“day”); also Breton deviñ (“to burn”), Cornish dewi (“to kindle”), Irish daigh (“fire, flame”), dóigh (“to burn, singe; sear, scorch”), Manx daah (“to scorch, singe; to cauterize”), Scottish Gaelic dòth (“scorch, singe; burn”), Welsh deifio (“to scorch, singe”), Latin foveō (“to warm, keep warm”), Greek τέφρα (téfra, “ash, cinder”), Albanian dhez, ndez (“to kindle, light”), Old Prussian dagis (“summer”), Armenian հրդեհ (hrdeh, “fire”), Sanskrit दह् (dah, “to burn, consume by fire, scorch, roast”).

noun days · daie · daye

The time when the Sun is above the horizon and it lights the sky. day and night; I work at night and sleep during the day.
Similar: daylight, day, daylength, daytime, photoperiod · Opposite: night, nightertale, nighttide, nighttime, scotoperiod, skotoperiod
A period of time equal or almost equal to a full day-night cycle, being 24 hours long. Holonyms: week < megasecond < fortnight < month < year < gigasecond < century < kiloannum, kiloyear, millennium < terasecond < mega-annum, megayear < petasecond < giga-annum, gigayear < exasecond < zettasecond < yottasecond < ronnasecond < quettasecond
Similar: twenty-four hour day, 24-hour day, nychthemeron
The time taken for the Sun to seem to be in the same place in the sky twice; a solar day.
Similar: twenty-four hour day, 24-hour day, nychthemeron
The time taken for the Earth to make a full rotation about its axis with respect to the fixed stars; a sidereal day or stellar day.
Similar: twenty-four hour day, 24-hour day, nychthemeron
informal A 24-hour period beginning at 6am or sunrise. Your 8am forecast: The high for the day will be 30 and the low, before dawn, will be 10.
A period of time between two set times which mark the beginning and the end of day in a calendar, such as from midnight to the following midnight or (Judaism) from nightfall to the following nightfall. The day begins at midnight.
The rotational period of a planet. A day on Mars is slightly over 24 hours.
The part of a day period which one spends at one’s job, school, etc. I worked two days last week.
An observance lasting for a day, such as an annual holiday. Christmas Day
A day set aside for a specified activity. leg day, moving day, observation day
A specified time or period; time, considered with reference to the existence or prominence of a person or thing; age; time; era. every dog has its day; in that day; back in the day; in those days
Similar: era, epoch, age, cycle, day, generation, Great Year, interval, period, Platonic year, time
A period of contention of a day or less. The day belonged to the Allies.

Similar: day, yearday

verb days · daying · dayed · daie · daye

intransitive, rare To spend a day (in a place). I nighted and dayed in Damascus town[.]

Day^²

/deɪ/

Sounds like day, dey, Dey · Rhymes with -eɪ

Where it comes from

This surname has multiple origins. Besides the ones listed below, Norman origin has also been suggested from De Haie", or "a corruption of the Normandy French D'Ossone, from the town of Ossone, in Normandy".

proper noun

A surname originating as a patronymic derived from a medieval diminutive of David.
An English surname originating as an occupation from day as a word for a "day-servant", an archaic term for a day-laborer, or from given names such as Dagr, Daug, Dege, and Dey, cognate with Scandinavian Dag.
A surname from Irish can be found as both Day and O'Day from Ó Deághaidh (“descendant of a person named Good Luck”).
An unincorporated community in Modoc County, California.
A census-designated place and unincorporated community in Lafayette County, Florida.
A township in Montcalm County, Michigan.
An unincorporated community in Isanti County, Minnesota.
An unincorporated community in Taney County, Missouri.
A town in Saratoga County, New York.
A town in Marathon County, Wisconsin.

Day^³

proper noun

A Mbum-Day language of Chad.

Thesaurus

Closest in meaning: daytime, daylight, solar day, sidereal day, twenty-four hours, tomorrow, morrow, daylong, yesterday, today, period, timing, daily, basis, stage, overnight

noun

Similar: day, yearday

Translations

Every language

noun period of 24 hours

Español	día
한국어	일주야 iljuya, 하루 haru, 일 il
日本語	日 hi, 一日 ichinichi
中文	天 tiān, 日 rì
हिन्दी	दिन din, वार vār, दिवस divas, दिहाड़ा dihāṛā
Kiswahili	siku
Português	dia
Français	jour, journée
Deutsch	Tag
Italiano	giorno
Ελληνικά	ημέρα iméra, μέρα méra, εικοσιτετράωρο eikositetráoro, ημερονύχτιο imeronýchtio
Română	zi
Русский	су́тки sútki, день denʹ
Tiếng Việt	ngày, hôm, bữa
العربية	يَوْم yawm
עברית	יְמָמָה yemama, יוֹם yom

noun period between sunrise and sunset

Español	día
한국어	낮 nat
日本語	昼 hiru
中文	白天 báitiān
हिन्दी	दिन din, दिवस divas
Kiswahili	mchana
Português	dia
Français	jour
Deutsch	Tag
Italiano	dì, giorno
Ελληνικά	ημέρα iméra, μέρα méra
Română	zi
Русский	день denʹ, светово́й день svetovój denʹ
Tiếng Việt	ban ngày
العربية	يَوْم yawm, نَهَار nahār
עברית	יום yom

noun period from midnight to the following midnight

Español	día
한국어	일 il, 날 nal, 하루 haru
日本語	日 hi
中文	天 tiān
हिन्दी	दिन din, दिवस divas
Português	dia
Français	jour
Deutsch	Tag
Italiano	giorno
Ελληνικά	ημέρα iméra, μέρα méra, εικοσιτετράωρο eikositetráoro, ημερονύχτιο imeronýchtio
Română	zi
Русский	су́тки sútki, день denʹ
Tiếng Việt	ngày
العربية	يَوْم yawm
עברית	יְמָמָה yemama, יוֹם yom

noun rotational period of a planet

Español	día
हिन्दी	दिन din, दिवस divas
Português	dia
Français	jour
Deutsch	Tag
Italiano	giorno
Ελληνικά	ημέρα iméra, μέρα méra, εικοσιτετράωρο eikositetráoro, ημερονύχτιο imeronýchtio
Română	zi
Русский	су́тки sútki, день denʹ

noun part of a day period which one spends at one's job, school, etc.

Español	jornada, día
한국어	주간 jugan
日本語	昼間 hiruma, 日 hi
中文	一天 yītiān, 白天 báitiān, 白晝 /白昼 báizhòu
हिन्दी	दिन din, दिवस divas
Português	dia
Français	journée, jour
Deutsch	Tag
Italiano	giorno
Ελληνικά	ημέρα iméra, μέρα méra
Română	zi
Русский	день denʹ
Tiếng Việt	ban ngày
العربية	يَوْم yawm
עברית	יום yom

noun observance lasting for a day

日本語	の日, デー dē

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Cite this

MLA

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

APA

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

Chicago

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

BibTeX

@misc{day_2026,
  title = {day},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/day},
  urldate = {2026-11-06}
}

day

AI In plain words

day¹

Where it comes from

noun days · daie · daye

verb days · daying · dayed · daie · daye

Day²

Where it comes from

proper noun

Day³

proper noun

Thesaurus

Translations

noun period of 24 hours

noun period between sunrise and sunset

noun period from midnight to the following midnight

noun rotational period of a planet

noun part of a day period which one spends at one's job, school, etc.

noun observance lasting for a day

day^¹

Day^²

Day^³