zi1 dai2知底

Jyutpingzi1 dai2
Yalejī dái

Definition

To know the inside story, the background, or the details of a situation or person.

colloquialpeoplecommunication

How it's used

Often used in the context of uncovering secrets or hidden motives behind a person or situation. It carries a slightly investigative or conspiratorial tone, implying that the information is not meant for public knowledge. It is frequently paired with verbs like 摸 or 探 to describe the act of finding out these hidden details.

Examples

His background is very mysterious, nobody knows the inside story.

Common phrases

to have fully figured out the inside story

Common mistake

Do not confuse this with knowing someone well in a friendly sense. It specifically refers to knowing hidden, often sensitive or potentially damaging, information about someone or something.

Grammar color guide

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