mou4 gaan3 dou6無間道无间道

Jyutpingmou4 gaan3 dou6
Yalemòuh gaan douh

Definition

The Buddhist realm of Avici (the lowest level of hell); also used figuratively to refer to undercover work.

  1. Avici, the lowest and most painful level of hell in Buddhism
  2. figurativeundercover work, or an undercover police officer
colloquialpeopleother

How it's used

Originally the title of a famous Hong Kong crime thriller, this term has evolved into a common noun for someone acting as a mole or double agent within an organization. It carries a sense of tension and betrayal, often used in office politics or social groups to describe someone leaking information to the other side.

Examples

He has been an undercover agent in the company for a long time.
Are you trying to be an undercover agent?

Common phrases

to act as an undercover agent

Common mistake

Do not use this to describe a regular police officer. It specifically implies a deceptive, hidden role where the person is pretending to be part of a group while secretly working against it.

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