zi1 m4 zi1 deng6 aa3知唔知埞呀

Jyutpingzi1 m4 zi1 deng6 aa3

Yalejī m̀h jī dehng a

Definition

A rhetorical, hostile question asking someone if they know where they are, or if they know what they are doing.

colloquialpeoplecommunication

How it's used

This phrase is a sharp, aggressive way to question someone's competence or awareness of their own actions. It implies that the person is acting foolishly, recklessly, or without considering the consequences of their behavior. It is almost exclusively used in confrontational situations to express frustration or disbelief at someone's lack of situational awareness.

Examples

nei5你zou6做gan2緊mat1乜aa4呀，zi1知m4唔zi1知deng6埞aa3呀？

What are you doing? Do you have any idea what you're doing?

Common phrases

zan1真hai6係zi1知m4唔zi1知deng6埞

really have no idea what one is doing

Common mistake

Do not confuse this with asking for directions or a location. Despite the word 埞, which can refer to a place or spot, this expression is idiomatic and strictly refers to one's sense of propriety or awareness of the situation, not physical geography.