double agent

WordReference Random House Learner's Dictionary of American English © 2026

ˈdou•ble ˈa•gent, n. [countable]

1. Government a spy in the service of two rival countries.

WordReference Random House Unabridged Dictionary of American English © 2026

dou′ble a′gent, 

1. Government a person who spies on a country while pretending to spy for it.
2. Government a spy in the service of two rival countries, companies, etc.
• 1930–35

Collins Concise English Dictionary © HarperCollins Publishers::

double agent noun

1. a spy employed by two mutually antagonistic countries, companies, etc