anus

Low-Frequency (Specialist)
UK/ˈeɪ.nəs/US/ˈeɪ.nəs/

Technical/Formal/Medical (Taboo/Vulgar in casual registers)

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Definition

Meaning

The opening at the lower end of the alimentary canal through which solid waste leaves the body.

Primarily retains its anatomical meaning; occasionally used in technical or metaphorical contexts (e.g., geometry) for a ring-like opening.

Linguistics

Semantic Notes

The word is a precise anatomical/zoological term but is often avoided in general conversation due to strong social taboos, where euphemisms are preferred. In technical usage, it is neutral.

Dialectal Variation

British vs American Usage

Differences

No lexical difference. Pronunciation differs slightly.

Connotations

Equally strong taboo/vulgar connotation in non-technical contexts in both dialects.

Frequency

Used with similar frequency in technical/medical contexts; equally avoided in polite everyday conversation.

Vocabulary

Collocations

strong
analrectumsphincterimperforateprolapsed
medium
externalopeningexamineregioncanal
weak
painitchbleedingareadischarge

Grammar

Valency Patterns

The [noun] of the anusAn [adjective] anusto examine the anus

Vocabulary

Synonyms

Strong

arsehole (UK) / asshole (US, vulgar)butthole (vulgar/informal)

Neutral

anal openingposterior opening

Weak

back passage (euphemistic)rear (euphemistic)

Vocabulary

Antonyms

mouthoral cavity

Usage

Context Usage

Business

Not used.

Academic

Used in biological, medical, veterinary, and anthropological texts.

Everyday

Almost always avoided; considered vulgar or overly graphic. Euphemisms like 'bottom' or 'behind' are used.

Technical

Standard, neutral term in medicine, biology, anatomy.

Examples

By Part of Speech

adjective

British English

  • The anal canal leads to the anus.
  • The surgeon repaired the anal fissure.

American English

  • The anal canal leads to the anus.
  • The surgeon repaired the anal fissure.

Examples

By CEFR Level

B2
  • The diagram clearly labels the rectum and the anus.
  • Certain medical conditions can affect the function of the anus.
C1
  • The imperforate anus is a congenital condition requiring surgical correction.
  • The study examined the nerve endings surrounding the anal verge and anus.

Learning

Memory Aids

Mnemonic

Think: 'A-nus' sounds like 'a' + 'nurse' – a nurse might deal with medical issues related to this part of the body.

Conceptual Metaphor

Rarely metaphorical. In geometry, 'annulus' (a ring shape) is etymologically related but not a direct metaphor.

Watch out

Common Pitfalls

Translation Traps (for Russian speakers)

  • Do not confuse with 'анус' (the direct loanword). Be aware of the very high register/taboo difference: Russian 'анус' is a highly formal medical term, while English 'anus' is still technical but carries a stronger vulgar connotation in casual speech.

Common Mistakes

  • Misspelling as 'annus' (which means 'year' in Latin).
  • Using it in inappropriate casual contexts, causing offense.

Practice

Quiz

Fill in the gap
The final section of the large intestine, the rectum, terminates at the .
Multiple Choice

In which context is the word 'anus' considered a neutral, appropriate term?

FAQ

Frequently Asked Questions

It is not inherently rude; it is the correct anatomical term. However, it is considered graphic and vulgar in casual, non-technical conversation. In polite settings, euphemisms are used.

The rectum is the final section of the large intestine, a chamber that holds feces. The anus is the external opening at the end of the rectum, controlled by sphincter muscles.

Yes, many exist due to the social taboo, such as 'backside', 'bottom', 'behind', 'rear end', or (for children) 'bum'. More vulgar synonyms include 'arsehole/asshole' and 'butthole'.

No. The related adjective is 'anal' (e.g., anal canal, anal fissure). Using 'anus' as an adjective is incorrect.