gwai2 tau4 zai2鬼頭仔鬼头仔

Jyutpinggwai2 tau4 zai2
Yalegwái tàuh jái
名詞

Definition

A traitor, especially a police informant.

colloquialpeopleslang

How it's used

Carries a strong sense of betrayal and distrust, often used in criminal or underground contexts to identify someone leaking information to authorities. While it specifically targets police informants, it can also be used more broadly for anyone acting as a double agent within a group. It is highly derogatory and should be used with caution as it implies a serious breach of loyalty.

Measure word

go3go

Common phrases

to catch an informant

Common mistake

Do not confuse this with 鬼仔, which is a common, neutral term for a Caucasian boy or a Westerner. Using 鬼頭仔 in a casual social setting to refer to a foreigner will cause significant offense and confusion.

Grammar color guide

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