butt
Word family
- buttocksnounC1
- headbuttverbC1
- headbuttnounC1
- abutverbC2
Synonym discussion
Sense: noun/2
All five words refer to the part of the body a person sits on, but they differ sharply in register. 'Buttocks' is the formal, anatomical term used in medicine, fitness, and clothing manufacture; it sounds clinical in casual speech. 'Bottom' is the safe, neutral choice for everyday conversation, suitable for talking to children or in mixed company. 'Behind' and 'rear' are gentle, slightly old-fashioned euphemisms; both feel polite but mildly humorous. 'Butt' is American informal and the most direct of the five; it can sound rude in front of strangers or older relatives, but is fine among friends and appears in common phrases like 'kick someone's butt' and 'pain in the butt'. For example, a doctor would say 'I need to examine your buttocks', a parent would say 'sit on your bottom', and a teenager would say 'I fell on my butt'.
Common collocations
Nouns
- cigarette butt
- rifle butt
- water butt
- butt of a joke
Phrases
- pain in the butt
- kick someone's butt
- get off your butt
- the butt of every joke
Prepositions
- the butt of (jokes/ridicule)
- butt against
- butt with (horns)
Etymology
Modern 'butt' is really three older words that fell together by accident. The 'thick end' meaning (of a rifle, cigarette, or tree trunk) goes back to a Middle English word for a stub or short, blunt thing, related to the modern verb 'to abut' (touch end to end). The 'large barrel' meaning came separately from Old French 'bot' or 'boute', a wine cask. The 'target of jokes' sense grew from an old archery word meaning a mound used as a shooting target. The body-part sense, finally, is short for 'buttock', an Old English word that has nothing to do with the others. Modern English speakers feel them all as one word, but historically they were four.