Definition of Manchurian Candidate in English:

Manchurian Candidate

noun

  • A person who is (or is believed to be) brainwashed into becoming a subversive agent, especially an assassin.

Origin

1970s; earliest use found in The National Review. Popularized by the 1962 film The Manchurian Candidate, adapted from the 1959 novel of the same name by Richard Condon.