Synonyms of day
18 similar words · 6 opposite words
Another word for day is daytime. Other synonyms of day are daylight, photoperiod and daylength. The opposite of day is night.
Synonyms and similar words for day
nounThe time when the Sun is above the horizon and it lights the sky.
- daylightThe period of time between sunrise and sunset.
- daylengthPeriod of daylight; photoperiod.
- daytimeThe time of daylight; the time between sunrise and sunset.
- photoperiodThe normal duration of natural daylight experienced by an organism; daylength.
nounA period of time equal or almost equal to a full day-night cycle, being 24 hours long.
- twenty-four hour daySynonym of nychthemeron.
- 24-hour daySynonym of nychthemeron.
- nychthemeronA period of one day and one night, a date: in the West, a period of 24 consecutive hours.
nounA specified time or period; time, considered with reference to the existence or prominence of a...
- era
- epoch
- ageA particular period of time in history, as distinguished from others.
- cycle
- generation
- Great Year
- intervalEither of the two breaks, at lunch and tea, between the three sessions of a day's play.
- periodEach of the divisions into which a school day is split, allocated to a given subject or activity.
- Platonic yearGreat Year; one complete precession of the equinoxes, approximately 25,765 years.
- timeA person's youth or young adulthood, as opposed to the present day.
nounMore synonyms
- yeardaySynonym of anniversary, a day occurring in a yearly cycle.
Opposite of day
nounThe time when the Sun is above the horizon and it lights the sky.
- nightA day, or at least a night.
- nighttideNighttime.
- nighttimeThe hours of darkness between sunset and sunrise; the night.
- scotoperiodThe period of darkness, or absence of daylight, experienced by an organism.
- skotoperiod
- nightertale obsoleteThe period of night; nighttime.
Meaning of day
- noun The time when the Sun is above the horizon and it lights the sky.
- noun A period of time equal or almost equal to a full day-night cycle, being 24 hours long.
- noun The time taken for the Sun to seem to be in the same place in the sky twice; a solar day.
day in other languages
Questions about synonyms of day
- What is another word for day?
- Day has 18 synonyms on Word.ws, such as daytime, daylight, photoperiod and daylength.
- What is the opposite of day?
- The opposite of day is night. Other antonyms of day are nighttime.
- What does day mean?
- Day means the time when the Sun is above the horizon and it lights the sky.
Source and license
Adapted from Wiktionary: day (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.
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Cite this page: “Synonyms of day.” Word.ws, https://word.ws/synonyms/day. Based on Wiktionary, CC BY-SA 4.0.