Buttocks synonyms: bottom, backside, rear, behind, posterior, rump, bum, butt, derriere, and seat.
The word buttocks refers to the two rounded parts of the body at the back of the hips. But did you know there are many other words for this body part?
Some sound polite, while others are casual, funny, or informal. For example, you might use posterior in a medical setting, bottom when speaking to a child, or bum in everyday British English. Learning these alternatives can help you choose the right word for different situations.
Whether you are writing an article, learning English, or looking for a more natural way to describe the human body, this guide explains 50 alternatives with simple meanings and examples. It also separates close synonyms from related words so you can use each term correctly.
Top 5 Buttocks Synonyms:
- Bottom — a common, polite everyday word.
- Backside — a mild and widely understood alternative.
- Rear — a neutral word for the back part of the body.
- Posterior — a formal or anatomical term.
- Behind — a familiar word used in everyday speech.
Next 5 Buttocks Synonyms
- Bum — a casual word, especially common in British English.
- Butt — an informal word common in American English.
- Rump — a word for the rear of a person or animal.
- Derriere — a playful, often stylish term.
- Seat — a mild term for the part of the body used for sitting.
What Does Buttocks Mean?
Buttocks is a plural noun that refers to the two rounded areas at the back of the pelvis. They contain muscles and fatty tissue and help support the body when sitting.
- Part of speech: Noun, usually plural
- Singular form: Buttock
- Plural form: Buttocks
- Simple meaning: The two fleshy parts at the back of the hips
- Example: The chair was too hard, so her buttocks felt sore after sitting for hours.
Pronunciation of Buttocks
- Phonetic spelling: BUT-uhks
- IPA: /ˈbʌtəks/
- Syllables: but-tocks (2 syllables)
Say it in two parts: BUT + ucks.
When to Use Buttocks Synonyms
Different alternatives suit different audiences and situations.
| Word | Best use | Tone |
| Bottom | Everyday conversation | Polite, mild |
| Backside | General conversation | Neutral |
| Rear | General or formal writing | Neutral |
| Posterior | Medical or anatomical writing | Formal |
| Behind | Everyday speech | Mild |
| Bum | Casual British English | Informal |
| Butt | Casual American English | Informal |
| Rump | Descriptive writing | Neutral or playful |
| Derriere | Humorous or stylish writing | Playful |
| Gluteal region | Medical or scientific writing | Technical |
50 Synonyms and Alternatives for Buttocks
Note: Not all 50 words below are exact synonyms. Some refer to the same body area, while others describe its muscles or use humor, slang, or a specific regional style. The notes explain these differences.
1. Bottom
Meaning
The lower, fleshy part of the body that you sit on. This is one of the most common polite alternatives.
Examples
- The child fell on her bottom while playing.
- He sat on the soft cushion to rest his bottom.
2. Backside
Meaning
A mild, everyday word for the rear part of the body.
Examples
- She landed on her backside after slipping.
- The hard bench made his backside uncomfortable.
3. Rear
Meaning
A neutral word for the back part of the body.
Examples
- The cyclist fell and hurt his rear.
- He adjusted his seat to make his rear more comfortable.
4. Posterior
Meaning
A formal word for the back part of the body, often used in medical or anatomical contexts.
Examples
- The doctor examined the patient’s posterior.
- The medical report described pain in the posterior area.
5. Behind
Meaning
A common word for the part of the body you sit on.
Examples
- The toddler fell on his behind.
- She brushed the dust off her behind after sitting on the ground.
6. Bum
Meaning
An informal term for the buttocks, especially common in British English.
Examples
- He sat down hard and hurt his bum.
- The child laughed when mud splashed onto his bum.
7. Butt
Meaning
A casual term for the buttocks, especially common in American English.
Examples
- I sat on my butt after losing my balance.
- He bought a cushion to make his butt more comfortable.
8. Rump
Meaning
The rear part of a person or animal’s body. It can sound playful when used for people.
Examples
- The cartoon character landed on his rump.
- The horse’s rump was covered with a blanket.
9. Derriere
Meaning
A playful or stylish word borrowed from French for the buttocks.
Examples
- She joked that her derriere needed a softer chair.
- The comedian made a playful remark about his derriere.
10. Seat
Meaning
A mild term for the part of the body used for sitting.
Examples
- The long ride made his seat sore.
- She shifted her weight to rest one side of her seat.
11. Tush
Meaning
An informal, often playful American term for the buttocks.
Examples
- The child fell on his tush in the snow.
- She told her brother to get his tush off the sofa.
12. Booty
Meaning
A slang term for the buttocks, often used in casual speech, music, or popular culture.
Examples
- The dance routine included a playful booty shake.
- The costume was designed to emphasize the performer’s booty.
13. Cheeks
Meaning
A casual shortening of butt cheeks, referring to the two rounded sides of the buttocks.
Examples
- The cold wind made his cheeks feel chilly.
- The cartoon character had round, rosy butt cheeks.
Context note: “Cheeks” on its own usually means the cheeks of the face, so use “butt cheeks” when clarity matters.
14. Gluteal Region
Meaning
The anatomical area of the body that includes the buttocks.
Examples
- The physiotherapist checked the patient’s gluteal region.
- The injury caused discomfort in the gluteal region.
15. Glutes
Meaning
A common shortened form of gluteal muscles. It refers to the muscles in the buttocks, not the whole body part.
Examples
- Squats help strengthen the glutes.
- The trainer taught her how to stretch her glutes.
16. Gluteal Muscles
Meaning
The group of muscles in the buttocks that help move and stabilize the hips.
Examples
- Strong gluteal muscles can support hip movement.
- The exercise targets the gluteal muscles.
17. Gluteus Maximus
Meaning
The largest muscle of the buttocks; this is an anatomical term, not an exact synonym for the entire buttocks.
Examples
- The gluteus maximus helps extend the hip.
- The therapist explained how the gluteus maximus works during walking.
18. Gluteus Medius
Meaning
A muscle located partly on the outer side of the hip and buttock.
Examples
- The gluteus medius helps keep the pelvis stable.
- Her exercise routine included movements that target the gluteus medius.
19. Gluteus Minimus
Meaning
A small, deep muscle in the hip and buttock area.
Examples
- The gluteus minimus helps move the hip.
- The instructor explained the role of the gluteus minimus in leg movement.
20. Hindquarters
Meaning
The rear part of an animal’s body; it is more commonly used for animals than for people.
Examples
- The horse’s hindquarters were strong and muscular.
- The veterinarian examined the dog’s hindquarters.
21. Haunches
Meaning
The upper rear parts of an animal’s body, including the hips and surrounding muscles. It can also describe a person’s upper thighs and hips in some contexts.
Examples
- The deer crouched on its haunches.
- The animal’s powerful haunches helped it leap forward.
22. Buttocks Area
Meaning
A clear descriptive phrase for the body area around the buttocks.
Examples
- The patient reported pain in the buttocks area.
- The cushion supported the buttocks area during the long journey.
23. Gluteal Area
Meaning
A medical or anatomical phrase for the area around the buttocks.
Examples
- The injury caused swelling in the gluteal area.
- The doctor checked the gluteal area for tenderness.
24. Posterior Region
Meaning
A formal descriptive phrase for the back region of the body; it can refer to more than just the buttocks.
Examples
- The scan showed a problem in the posterior region.
- The specialist examined the posterior region after the fall.
25. Rear End
Meaning
An informal phrase for the back end of a person’s or animal’s body.
Examples
- He slipped and landed on his rear end.
- The dog wagged its tail and lowered its rear end.
26. Tail End
Meaning
The backmost part of something; when used for the body, it is informal and often humorous.
Examples
- The cartoon animal sat down on its tail end.
- He joked that his tail end was sore after the long drive.
27. Fanny
Meaning
A regional informal term. In British English, it can mean the buttocks; in American English, it usually refers to female genitalia, so usage varies.
Examples
- The British character fell on his fanny.
- She used the word “fanny” because it was common in her family.
28. Arse
Meaning
A blunt, informal British and other regional term for the buttocks. It can sound rude.
Examples
- He fell flat on his arse.
- The comedian used the word “arse” in a cheeky joke.
29. Ass
Meaning
An informal American term for the buttocks; it can be considered rude in some settings.
Examples
- He landed on his ass after slipping.
- The character joked about sitting on his ass all day.
30. Booty Cheeks
Meaning
A playful slang phrase for the two sides of the buttocks.
Examples
- The silly song mentioned booty cheeks.
- The cartoon character wiggled its booty cheeks during the dance.
31. Butt Cheeks
Meaning
The two rounded halves of the buttocks.
Examples
- The doctor explained the muscles beneath the butt cheeks.
- The cold seat made her butt cheeks feel chilly.
32. Backside Area
Meaning
A descriptive phrase for the area at the back of the body.
Examples
- The padding protected the backside area.
- He felt soreness around the backside area after cycling.
33. Seat Area
Meaning
A descriptive phrase for the body part that rests on a chair.
Examples
- The padded shorts protected the seat area during the ride.
- She adjusted the cushion under her seat area.
34. Lower Rear
Meaning
A descriptive phrase for the lower back part of the body.
Examples
- The fall caused pain in his lower rear.
- The padded chair reduced pressure on her lower rear.
35. Lower Backside
Meaning
A descriptive phrase for the rear part of the body, although it may be unclear whether it means the buttocks or lower back.
Examples
- He felt discomfort around his lower backside.
- The cushion supported her lower backside during the trip.
36. Pelvic Region
Meaning
The area around the pelvis, which includes the hips and nearby structures; it is broader than the buttocks.
Examples
- The doctor examined the pelvic region.
- The injury caused pain near the pelvic region.
37. Hip and Buttock Area
Meaning
A descriptive phrase for the area around the hips and buttocks.
Examples
- The stretching routine focused on the hip and buttock area.
- She felt stiffness in her hip and buttock area after exercise.
38. Gluteal Musculature
Meaning
A technical term for the muscles of the buttocks.
Examples
- The exercise strengthens the gluteal musculature.
- The physiotherapist assessed his gluteal musculature.
39. Buttock
Meaning
The singular form of buttocks, referring to one of the two rounded parts.
Examples
- She bruised one buttock during the fall.
- The injection was given in the upper outer part of the buttock.
40. Nates
Meaning
A rare, formal anatomical term for the buttocks, mainly found in technical or older medical writing.
Examples
- The old anatomy text used the word “nates.”
- The medical glossary listed “nates” as an anatomical term.
41. Gluteal Folds
Meaning
The creases beneath the buttocks where they meet the upper thighs; these are parts of the area, not synonyms for the whole buttocks.
Examples
- The clinician examined the skin around the gluteal folds.
- The clothing seam rested near the gluteal folds.
42. Intergluteal Cleft
Meaning
The groove between the two buttocks; this is a specific anatomical feature, not another name for the entire area.
Examples
- The doctor checked the skin around the intergluteal cleft.
- The medical guide explained how to keep the intergluteal cleft clean and dry.
43. Gluteal Mass
Meaning
A technical descriptive phrase for the bulk of tissue in the buttock area.
Examples
- The scan showed swelling in the gluteal mass.
- The clinician assessed the gluteal mass after the injury.
44. Posterior Buttock
Meaning
A descriptive anatomical phrase for the back part of the buttock region.
Examples
- The therapist assessed the posterior buttock after the fall.
- The pain was located in the posterior buttock.
45. Buttock Region
Meaning
A straightforward anatomical phrase for the area of the buttocks.
Examples
- The patient felt pain in the buttock region.
- The doctor checked the buttock region for bruising.
46. Rear Portion
Meaning
A general phrase for the back part of something; it can describe the body but is not a standard synonym for buttocks.
Examples
- The costume covered the rear portion of the body.
- The padded garment protected the rear portion during the activity.
47. Lower Seat
Meaning
A descriptive phrase that may refer to the body part used for sitting, though it is less common than bottom or seat.
Examples
- The hard chair made his lower seat uncomfortable.
- She placed a soft pad beneath her lower seat.
48. Rump Area
Meaning
A descriptive phrase for the rump, commonly used for animals and sometimes playfully for people.
Examples
- The vet checked the dog’s rump area.
- The horse had a small mark on its rump area.
49. Bum Cheeks
Meaning
An informal phrase, common in British English, for the two sides of the buttocks.
Examples
- The child sat in the snow and chilled his bum cheeks.
- She laughed when the cartoon character wiggled its bum cheeks.
50. Tushie
Meaning
A gentle, playful version of tush, often used when speaking to children.
Examples
- The little boy fell on his tushie.
- His mother put a cushion under his tushie.
True Synonyms vs. Related Words
It is important to choose words that fit your meaning. Some terms above refer directly to the buttocks, while others describe muscles or nearby body areas.
Closest synonyms: bottom, backside, rear, behind, posterior, bum, butt, rump, derriere, tush, tushie, buttock, butt cheeks, bum cheeks, and nates.
Informal or regional alternatives: booty, fanny, arse, and ass. Their tone and meaning vary by region.
Related anatomical terms: glutes, gluteus maximus, gluteus medius, gluteus minimus, gluteal muscles, gluteal region, gluteal area, gluteal musculature, gluteal folds, and intergluteal cleft. These describe muscles or specific parts of the area rather than the entire buttocks.
Frequently Asked Questions
What is the most common synonym for buttocks?
Bottom is a common, polite alternative. Backside and behind are also widely understood.
What is a polite word for buttocks?
Bottom is a good choice in everyday conversation, especially when speaking to children. Posterior is more formal and may suit medical writing.
What is the medical term for buttocks?
Buttocks itself is a standard anatomical term. Gluteal region is another common medical phrase for the area.
What is the slang word for buttocks?
Common slang terms include butt, bum, ass, arse, booty, and tush. Their meaning and level of politeness depend on the region and context.
Is “glutes” another word for buttocks?
Not exactly. Glutes usually refers to the muscles in the buttocks, while buttocks refers to the body parts that contain those muscles and other tissue.
Is “bum” British or American English?
Bum is especially common in British English. Americans are more likely to say butt or bottom.
What is the singular of buttocks?
The singular form is buttock. For example: “He injured one buttock while playing football.”
Are “bottom” and “buttocks” the same?
They often refer to the same body area, but bottom is generally more conversational and polite, while buttocks sounds more formal or anatomical.
Conclusion:
There are many synonyms for buttocks, but the best choice depends on your audience and purpose. For everyday English, the bottom, backside, and behind are clear and polite. If you want a casual word, try butt, bum, or tush. In medical or scientific writing, posterior and gluteal regions may be more suitable.
Remember that not every related word means exactly the same thing. For example, glutes refers to muscles, while gluteal folds and intergluteal clefts describe specific parts of the area. Choosing accurate words helps your writing sound natural and trustworthy.
Whether you are learning English, writing a story, or improving your vocabulary, understanding these 50 buttocks synonyms can help you express yourself more clearly. Always consider the tone, meaning, and context before choosing an alternative.
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