What does sleeper mean?

Definitions for sleeper
ˈsli pərsleep·er

This dictionary definitions page includes all the possible meanings, example usage and translations of the word sleeper.

Princeton's WordNet

  1. sleeper, slumberernoun

    a rester who is sleeping

  2. sleepernoun

    a spy or saboteur or terrorist planted in an enemy country who lives there as a law-abiding citizen until activated by a prearranged signal

  3. sleepernoun

    an unexpected achiever of success

    "the winner was a true sleeper--no one expected him to get it"

  4. tie, railroad tie, crosstie, sleepernoun

    one of the cross braces that support the rails on a railway track

    "the British call a railroad tie a sleeper"

  5. sleeping car, sleeper, wagon-litnoun

    a passenger car that has berths for sleeping

  6. sleepernoun

    pajamas with feet; worn by children

  7. sleepernoun

    a piece of furniture that can be opened up into a bed

  8. sleeper, sleeper gobynoun

    tropical fish that resembles a goby and rests quietly on the bottom in shallow water

  9. sleepernoun

    an unexpected hit

    "that movie was the sleeper of the summer"


  1. sleepernoun

    Someone who sleeps.

  2. sleepernoun

    A saboteur or terrorist who lives unobtrusively in a community until activated by a prearranged signal; may be part of a sleeper cell.

  3. sleepernoun

    A railroad sleeping car.

    We spent a night on an uncomfortable sleeper between Athens and Vienna.

  4. sleepernoun

    A railroad tie.

  5. sleepernoun

    A structural beam in a floor running perpendicular to both the joists beneath and floorboards above.

  6. sleepernoun

    A heavy floor timber in a ship's bottom.

  7. sleepernoun

    Something that achieves unexpected success after an interval of time.

    A box-office bomb when it first came out, the film was a sleeper, becoming much more popular decades after being released.

  8. sleepernoun

    A goby-like bottom-feeding freshwater fish of the family Odontobutidae. Also "sleeper goby."

  9. sleepernoun

    A type of pajama for a person, especially a child, that covers its whole body, including their feet.

    Aaron, Devin, and Laura looked so comfy in their sleepers.

  10. sleepernoun

    An automobile which, not too quick out of the factory has been internally modified to excess, while retaining a mostly stock appearance in order to fool opponents in a drag race.

Samuel Johnson's Dictionary

  1. Sleepernoun

    Etymology: from sleep.

    Sound musick; come my queen, take hand with me,
    And rock the ground whereon these sleepers be. William Shakespeare.

    What’s the business,
    That such an hideous trumpet calls to parley
    The sleepers of the house? William Shakespeare, Macbeth.

    In some countries, a plant which shutteth in the night, openeth in the morning, and openeth wide at noon; the inhabitants say is a plant that sleepeth. There be sleepers enow then; for almost all flowers do the like. Francis Bacon.

    Night is indeed the province of his reign;
    Yet all his dark exploits no more contain
    Than a spy taken, and a sleeper slain. Dryden.

    He must be no great eater, drinker, nor sleeper, that will discipline his senses, and exert his mind: every worthy undertaking requires both. Nehemiah Grew.

    Let penal laws, if they have been sleepers of long, or if grown unfit for the present time, be by wise judges confined in the execution. Francis Bacon.


  1. sleeper

    A sleeper refers to multiple definitions based on different contexts: 1. In general, a sleeper is a person who is asleep or someone who is sleeping. 2. In sports, it is a term used to describe a player or team that is less known or underrated but could unexpectedly perform well or succeed. 3. In entertainment like movies or music, it refers to a product that may not have been initially successful or recognized, but gradually gains popularity or commercial success over time. 4. In vehicles, a sleeper is a car that looks ordinary from the outside but is equipped with high-performance parts on the inside. 5. In construction and architecture, a sleeper is a horizontal beam that is used for support, particularly in a railroad track or as a foundation in buildings. 6. In espionage, a sleeper is an agent who remains undercover or inactive for a long period until required for a specific mission.

Webster Dictionary

  1. Sleepernoun

    one who sleeps; a slumberer; hence, a drone, or lazy person

  2. Sleepernoun

    that which lies dormant, as a law

  3. Sleepernoun

    a sleeping car

  4. Sleepernoun

    an animal that hibernates, as the bear

  5. Sleepernoun

    a large fresh-water gobioid fish (Eleotris dormatrix)

  6. Sleepernoun

    a nurse shark. See under Nurse

  7. Sleepernoun

    something lying in a reclining posture or position

  8. Sleepernoun

    one of the pieces of timber, stone, or iron, on or near the level of the ground, for the support of some superstructure, to steady framework, to keep in place the rails of a railway, etc.; a stringpiece

  9. Sleepernoun

    one of the joists, or roughly shaped timbers, laid directly upon the ground, to receive the flooring of the ground story

  10. Sleepernoun

    one of the knees which connect the transoms to the after timbers on the ship's quarter

  11. Sleepernoun

    the lowest, or bottom, tier of casks

  12. Etymology: [Cf. Norw. sleip a sleeper (a timber), as adj., slippery, smooth. See Slape.]


  1. Sleeper

    Sleeper were a British Britpop band in the 1990s fronted by Louise Wener. The band had eight UK Top 40 hit singles and three UK Top 10 albums. Their music was also featured in the soundtrack of Trainspotting.

Suggested Resources

  1. sleeper

    Song lyrics by sleeper -- Explore a large variety of song lyrics performed by sleeper on the Lyrics.com website.

Surnames Frequency by Census Records


    According to the U.S. Census Bureau, Sleeper is ranked #12012 in terms of the most common surnames in America.

    The Sleeper surname appeared 2,599 times in the 2010 census and if you were to sample 100,000 people in the United States, approximately 1 would have the surname Sleeper.

    90% or 2,339 total occurrences were White.
    3.5% or 93 total occurrences were American Indian or Alaskan Native.
    2.5% or 65 total occurrences were of Hispanic origin.
    2% or 53 total occurrences were of two or more races.
    1.3% or 35 total occurrences were Black.
    0.5% or 14 total occurrences were Asian.

How to pronounce sleeper?

How to say sleeper in sign language?


  1. Chaldean Numerology

    The numerical value of sleeper in Chaldean Numerology is: 4

  2. Pythagorean Numerology

    The numerical value of sleeper in Pythagorean Numerology is: 8

Examples of sleeper in a Sentence

  1. Frank Herbert:

    Without change, something sleeps inside us, and seldom awakens. The sleeper must awaken.

  2. Jessamyn West:

    A religious awakening which does not awaken the sleeper to love has roused him in vain.

  3. Greek Proverb:

    The net of the sleeper catches fish.

  4. Milla Jovovich:

    [Ever] was never a ‘good’ sleeper, so every two or three hours I was waking up to feed her and calm her. I never wanted to let her signals go unanswered and letting her cry it out was not the way I wanted to raise my child, not that I judge other methods of mothering, I just knew that it wouldn’t make me happy to allow her to be separated from us at night and cry for hours on end. And I always say, whatever you need to do to be a happy mother is the best for baby.

  5. George W. Bush:

    Our intelligence community believes (he) was training in poisons at an al Qaeda camp in Afghanistan, and had been sent to the United States before September the 11th to serve as a sleeper agent ready for follow-on attacks, among the potential targets our intelligence community believes this al Qaeda operative discussed … were water reservoirs, the New York Stock Exchange and United States military academies such as this one.

Popularity rank by frequency of use


Translations for sleeper

From our Multilingual Translation Dictionary

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"sleeper." Definitions.net. STANDS4 LLC, 2023. Web. 11 Dec. 2023. <https://www.definitions.net/definition/sleeper>.

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    being essentially equal to something
    • A. tantamount
    • B. bristly
    • C. lacerate
    • D. pecuniary

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