View synonyms for day



[ dey ]


  1. the interval of light between two successive nights; the time between sunrise and sunset:

    Since there was no artificial illumination, all activities had to be carried on during the day.

  2. the light of day; daylight:

    The owl sleeps by day and feeds by night.

  3. Astronomy.
    1. Also called mean solar day. a division of time equal to 24 hours and representing the average length of the period during which the earth makes one rotation on its axis.
    2. Also called solar day none. a division of time equal to the time elapsed between two consecutive returns of the same terrestrial meridian to the sun.
    3. Also called civil day. a division of time equal to 24 hours but reckoned from one midnight to the next. lunar day none, sidereal day none.
  4. an analogous division of time for a planet other than the earth:

    the Martian day.

  5. the portion of a day allotted to work:

    an eight-hour day.

  6. a day on which something occurs:

    the day we met.

  7. (often initial capital letter) a day assigned to a particular purpose or observance:

    New Year's Day.

  8. a time considered as propitious or opportune:

    His day will come.

  9. a day of contest or the contest itself:

    to win the day.

  10. Often . a particular time or period:

    the present day; in days of old.

  11. Usually . period of life or activity:

    His days are numbered.

  12. period of existence, power, or influence:

    in the day of the dinosaurs.

  13. Architecture. light 1( def 19a ).



[ dey ]


  1. Benjamin Henry, 1810–89, U.S. newspaper publisher.
  2. Clar·ence (Shep·ard) [klar, -, uh, ns , shep, -erd], 1874–1935, U.S. author.
  3. Dorothy, 1897–1980, U.S. Roman Catholic social activist, journalist, and publisher.
  4. Also Daye. Stephen, 1594?–1668, U.S. colonist, born in England: considered the first printer in the Colonies.



/ deɪ /


  1. DaySir Robin19232000MBritishFILMS AND TV: radio journalistFILMS AND TV: television journalist Sir Robin. 1923–2000, British radio and television journalist, noted esp for his political interviews



/ deɪ /


  1. Also calledcivil day the period of time, the calendar day, of 24 hours' duration reckoned from one midnight to the next
    1. the period of light between sunrise and sunset, as distinguished from the night
    2. ( as modifier )

      the day shift

  2. the part of a day occupied with regular activity, esp work

    he took a day off

  3. sometimes plural a period or point in time

    he was a good singer in his day

    in days gone by

    any day now

  4. the period of time, the sidereal day, during which the earth makes one complete revolution on its axis relative to a particular star. The mean sidereal day lasts 23 hours 56 minutes 4.1 seconds of the mean solar day
  5. the period of time, the solar day, during which the earth makes one complete revolution on its axis relative to the sun. The mean solar day is the average length of the apparent solar day and is some four minutes (3 minutes 56.5 seconds of sidereal time) longer than the sidereal day
  6. the period of time taken by a specified planet to make one complete rotation on its axis

    the Martian day

  7. often capital a day designated for a special observance, esp a holiday

    Christmas Day

  8. all in a day's work
    part of one's normal activity; no trouble
  9. at the end of the day
    in the final reckoning
  10. day of rest
    the Sabbath; Sunday
  11. end one's days
    to pass the end of one's life
  12. every dog has his day
    one's luck will come
  13. in this day and age
  14. it's early days
    it's too early to tell how things will turn out
  15. late in the day
    1. very late (in a particular situation)
    2. too late
  16. that will be the day
    1. I look forward to that
    2. that is most unlikely to happen
  17. a time of success, recognition, power, etc

    his day will soon come

  18. a struggle or issue at hand

    the day is lost

    1. the ground surface over a mine
    2. ( as modifier )

      the day level

  19. from day to day
    without thinking of the future
  20. call it a day
    to stop work or other activity
  21. day after day
    without respite; relentlessly
  22. day by day
    gradually or progressively; daily

    he weakened day by day

  23. day in, day out
    every day and all day long
  24. from Day 1 or from Day One
    from the very beginning
  25. one of these days
    at some future time
  26. modifier of, relating to, or occurring in the day

    the day shift


/ /

  1. See under sidereal time

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Other Words From

  • half-day noun
  • pre·day noun

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Word History and Origins

Origin of day1

First recorded before 950; Middle English; Old English dæg; cognate with German Tag

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Word History and Origins

Origin of day1

Old English dæg; related to Old High German tag, Old Norse dagr

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Idioms and Phrases

  1. call it a day, to stop one's activity for the day or for the present; quit temporarily:

    After rewriting the paper, she decided to call it a day.

  2. day in, day out, every day without fail; regularly: Also day in and day out.

    They endured the noise and dirt of the city day in, day out.

  3. day and night. night ( def 11 ).

More idioms and phrases containing day

  • all in a day's work
  • any day
  • apple a day
  • bad hair day
  • break of day
  • by the day
  • call it a day
  • carry the day
  • different as night and day
  • dog days
  • every dog has its day
  • field day
  • for days on end
  • forever and a day
  • from this day forward
  • good day
  • had its day
  • happy as the day is long
  • heavenly days
  • in all one's born days
  • in the cold light of day
  • in this day and age
  • late in the day
  • make a day of it
  • make one's day
  • name the day
  • night and day
  • not give someone the time of day
  • not one's day
  • one of these days
  • order of the day
  • pass the time (of day)
  • plain as day
  • rainy day
  • red-letter day
  • Rome wasn't built in a day
  • salad days
  • save the day
  • seen better days
  • see the light of day
  • that'll be the day
  • the other day
  • time of day
  • tomorrow is another day
  • win through (the day)

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Example Sentences

Biden, who has held public events less regularly, has been seen wearing a mask on 28, including on all but five days this month.

The rules are defined day by day by people with subjective points of view.

From Eater

When you have 15 people, and the 15 within a couple of days is going to be down to close to zero.

Earlier in the day, Redfield had said wearing a mask was more effective than a vaccine.

It’s light enough to wear in the middle of the day here in the muggy South, and dries fast enough that I usually keep it on while I go overboard for a dip.

He added: “People say he deserves his day in court… Do we have enough time?”

For many years afterward it was a never-ending topic of conversation, and is more or less talked of even to this day.

“We talked about the science the whole time the other day,” Krauss told The Daily Beast in a phone interview.

Gunshots rang out in Paris this morning on a second day of deadly violence that has stunned the French capital.

In the middle of all of that past suffering and present-day conflict, this Cosby bomb was dropped.

The afternoon was a lovely one—the day was a perfect example of the mellowest mood of autumn.

Edna did not reveal so much as all this to Madame Ratignolle that summer day when they sat with faces turned to the sea.

Each day she resolved, "To-morrow I will tell Felipe;" and when to-morrow came, she put it off again.

There are three things a wise man will not trust: the wind, the sunshine of an April day, and woman's plighted faith.

The proceedings of the day commenced with divine service, performed by Unitarian and Baptist ministers.


Related Words

Definitions and idiom definitions from Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.




Daxday after day