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  • ass
    ass
    noun
    a long-eared, slow, patient, sure-footed domesticated mammal, Equus asinus, related to the horse, used chiefly as a beast of burden.
  • -ass
    -ass
    a combining form of ass in the sense of “stupid person“ or “the buttocks,“ used in vulgar slang words as an intensifier or with disparaging intent.
  • ass.
    ass.
    abbreviation
    assistant.
Synonyms

ass

1 American  
[as] / æs /

noun

  1. a long-eared, slow, patient, sure-footed domesticated mammal, Equus asinus, related to the horse, used chiefly as a beast of burden.

  2. Also called wild ass.  an African wild ass, kiang, onager, or any of their subspecies.

  3. a stupid, foolish, or stubborn person.


ass 2 American  
[as] / æs /

noun

Slang: Vulgar.
  1. the buttocks.

  2. the rectum.

  3. sexual intercourse.


idioms

  1. kick ass, kick.

-ass 3 American  
Or -assed
  1. a combining form of ass in the sense of “stupid person“ or “the buttocks,“ used in vulgar slang words as an intensifier or with disparaging intent.


ass. 4 American  

abbreviation

  1. assistant.

  2. association.

  3. assorted.


ass 1 British  
/ æs /

noun

  1. either of two perissodactyl mammals of the horse family ( Equidae ), Equus asinus ( African wild ass ) or E. hemionus ( Asiatic wild ass ). They are hardy and sure-footed, having longer ears than the horse

  2. (not in technical use) the domesticated variety of the African wild ass; donkey

  3. a foolish or ridiculously pompous person

  4. informal not close to obtaining, winning, etc

    she wasn't within an ass's roar of it

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

ass 2 British  
/ æs /

noun

  1. slang the buttocks

  2. slang the anus

  3. offensive sexual intercourse or a woman considered sexually (esp in the phrase piece of ass )

  4. slang to take such action as one considers necessary to avoid censure, ridicule, etc at a later time

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

ass More Idioms  

    More idioms and phrases containing ass


Sensitive Note

See arse.

Usage

What does -ass mean? The combining form -ass is used like a suffix meaning “ass,” in the sense of "buttocks." While occasionally -ass is meant literally or to mean "(stupid) person," more often it is used as an intensifier. Intensifiers are words or word elements that essentially mean "very" or "somewhat." The form -ass is often used in slang terms, especially vulgar or insulting ones. The form -ass comes from Old English assa, meaning “ass,” in the sense of "donkey."Unlike some other combining forms, -ass is often separated with a hyphen, as in big-ass.

Other Word Forms

Etymology

Origin of ass1

First recorded before 1000; Middle English asse, Old English assa, probably a pet name or diminutive form based on a Celtic form, e.g., Old Irish asan, Old Welsh asen, from Latin asinus; akin to Greek ónos “ass,” from a non-Indo-European language of Asia Minor, e.g., Sumerian anše “ass”

Origin of ass2

First recorded in 1860–65; variant of arse, with loss of r before s, as in passel, cuss, etc.; see origin at arse

Explanation

Literally, your ass is your buttocks. In slang, an ass is a jerk or an idiot. Neither is highly regarded. When people are being slangy or folksy, you hear this word a lot: "Get off your ass!" "Watch your ass!" "Why are you such an ass?" "Get your ass in here." Though this isn't one of the very worst swear words, it is considered harsher than butt and lots of people consider ass to be an inappropriate word. You would be a lot better off using softer words like bottom or tush in most situations. Sometimes ass can also mean sex — another use worth avoiding.

Keep Reading on Vocabulary.com

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

As part of the settlement agreement, Big Ass Fans is required to comply with an injunction that bars it from making untruthful, deceptive or misleading marketing claims in the future.

From Los Angeles Times • Jan. 30, 2025

In Hudson, N.Y., on a recent and rainy Friday night, some 35 people sat on a natty hodgepodge of couches and high-backed seats for the Queer Ass Film Club.

From New York Times • Feb. 1, 2024

A rare Somali Wild Ass foal was born in a Chilean zoo, sparking hope for a critically endangered species with less than 200 mature individuals left worldwide.

From Reuters • Jul. 17, 2023

She appears in the second-century Roman novel The Golden Ass, rescuing the protagonist Lucius.

From Textbooks • Apr. 19, 2023

"Justice shall be mixed with mercy. You shall not always be an Ass."

From "The Horse and His Boy" by C.S. Lewis