[ɑːs], (Noun)

Definitions:
- a person's buttocks or anus

- a stupid, irritating, or contemptible person


Phrases:
- arse about face
- arse over tit
- get off one's arse
- get one's arse into gear
- have one's head up one's arse
- my arse!
- not know one's arse from one's elbow
- up your arse!

Origin:
Old English ærs, of Germanic origin; related to Dutch aars and German Arsch. See also ass

[ɑːs], (Verb)

Definitions:
- have enough interest or enthusiasm to do something
(e.g: I need to cut the grass, but I can't be arsed to do it just yet)


Phrases:
- arse about face
- arse over tit
- get off one's arse
- get one's arse into gear
- have one's head up one's arse
- my arse!
- not know one's arse from one's elbow
- up your arse!

Origin:
Old English ærs, of Germanic origin; related to Dutch aars and German Arsch. See also ass