Dictionary.com
Thesaurus.com

arse

American  
[ahrs] / ɑrs /

noun

Chiefly British Slang: Vulgar.
  1. ass.


arse British  
/ ɑːs /

noun

  1. the buttocks

  2. the anus

  3. a stupid person; fool

  4. sexual intercourse

  5. effrontery; cheek

  6. to start to do something seriously and quickly

"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

Sensitive Note

In American English, ass in the senses "the buttocks; the rectum" is considered to be a vulgar, impolite usage. The variant arse , which is chiefly British and regarded as vulgar by speakers of British English, seems to some American speakers to be a less vulgar, even daintier term than the more explicit ass . But​ this may not always be the case in America, so one should be just as cautious about using arse when in a polite setting.

Usage

Dating back at least a thousand years, and taboo till around the middle of the 20th century, this venerable ``Anglo-Saxon'' word now seems unlikely to cause offence in all but the most formal contexts. Its acceptability has possibly been helped by such useful verb formations as ``to arse about'' and ``I can't be arsed''

Etymology

Origin of arse

First recorded before 1000; Middle English ars, er(e)s, Old English ærs, ears; cognate with Old Frisian ers, Dutch aars, Old Norse, Middle Low German, Old Saxon, Old High German ars ( German Arsch ), Greek órrhos “rump” (from orso-, which occurs in compounds), Armenian or̄kh, Hittite arras; akin to Greek ourá and Old Irish err “tail.” All of the nouns derive from the Proto-Indo-European root ers-, ors- “backside, buttocks, tail.” ass 2

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.

The Brits are the people who seem to cultivate it more than others and have named its fruit “the cat arse fruit” for obvious reasons.

From Seattle Times • May 24, 2024

Princess Diana's brother on Wednesday refuted former President Donald Trump's claim that his late sister wanted to "kiss his arse."

From Salon • Mar. 16, 2023

"Remember life has given you this chance: you didn't dodge the honour, you didn't arse it up: you defended the Motherland, all of you were ready to die in these past 180 days," he said.

From Reuters • Jan. 5, 2023

"It was just meant to make sure people weren't left on their arse," he said in a video posted to Twitter.

From BBC • Oct. 9, 2020

Before he leaves his house he always sticks his head out the door and tells the lane, Here’s me head, me arse is coming.

From "Angela's Ashes: A Memoir" by Frank McCourt