noi6 gwai2內鬼内鬼

Jyutpingnoi6 gwai2

Yalenoih gwái

名詞Uncommon

Definition

An insider threat, mole, or traitor who leaks secrets and betrays an organization.

colloquialpeoplework

How it's used

This term carries a strong sense of betrayal and is often used in professional or competitive settings to describe someone who undermines their own team. It is frequently heard in crime dramas or when discussing corporate espionage. Unlike more formal terms for spies, this carries a slightly more colloquial and accusatory tone.

Measure word

go3個go

Examples

gung1公si1司jau5有noi6內gwai2鬼，gei1機mat6密man4文gin2件sin1先wui2會lau4流ceot1出zo2咗heoi3去。

There is a mole in the company, that is why the confidential documents leaked out.

nei5你waai4懷ji4疑ngo5我hai6係noi6內gwai2鬼aa4呀？

Are you suspecting that I am the mole?

Common phrases

zuk1捉noi6內gwai2鬼

to catch a mole

Common mistake

Do not confuse this with general terms for spies like 間諜, which often implies a professional agent from an external entity. 內鬼 specifically highlights that the person is already part of the group or organization they are betraying.