Meaning of the word "double agent" in English

What does "double agent" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

double agent

US /ˈdʌb.əl ˈeɪ.dʒənt/
UK /ˈdʌb.əl ˈeɪ.dʒənt/

Noun

a spy who works for two opposing sides and passes information between them

Example:
The novel features a thrilling plot about a double agent during the Cold War.
He was exposed as a double agent and arrested for treason.