noun, verb ·Rare ·Advanced level

Definitions

Noun

1. 1
   A spy working in counterintelligence.
2. 2
   a spy who works against enemy espionage wordnet

Verb

1. 1
   To carry out counterespionage. intransitive

Synonyms

All synonyms

double agentmoleoperativescoutsecret agentspotter

Etymology

From counter- + spy.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.