si2 fat1屎忽

Jyutpingsi2 fat1
Yalesí fāt

Definition

Butt; backside; buttocks.

colloquialbodyslang

How it's used

Refers specifically to the buttocks or the area around the anus, carrying a slightly crude or informal tone that makes it unsuitable for professional or formal settings. It is frequently used in idiomatic expressions to describe someone who cannot sit still, such as describing a person as having a "itchy butt" when they are fidgety or impatient.

Measure word

go3go

Examples

Sit down for a while, are you restless?
He fell on his butt and it hurts so much he cannot move.

Common phrases

restless or fidgety
a derogatory term for a person

Common mistake

Avoid using this in polite company or around strangers, as it is considered vulgar and can be offensive depending on the context. Use 屁股 if you need a more neutral or standard term.

Grammar color guide

Noun
Verb
Adjective
Adverb
Pronoun
Classifier
Particle
Connector