Agent provocateur

/ˈeɪ.dʒənt ˌpɹəʊ.vɒk.æ.tʊə(ɹ)/ noun

noun ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    A person who secretly disrupts a group's activities from within the group, particularly by encouraging or committing illegal acts to discredit the group or expose them to prosecution; an instigator, troublemaker.

    ""This agent-provocateur business is quite foreign to British justice.""

  2. 2
    a secret agent who incites suspected persons to commit illegal acts wordnet

Example

More examples

""This agent-provocateur business is quite foreign to British justice.""

Etymology

Borrowed from French agent provocateur (literally “provocative agent”).