A person who secretly observes others to obtain information
(Noun)
Synonyms:
  1. operative
  2. spook
  3. secret-agent
  4. intelligence agent
  5. counterintelligence agent
  6. agent
  7. counterspy
  8. espionage agent
  9. double-agent
  10. emissary
  11. scout
  12. detective
  13. observer
  14. watcher
  15. wiretapper
  16. undercover agent
  17. intelligencer
  18. undercover man
  19. secret-service agent
  20. peeping-tom
  21. mole
  22. mata-hari
To see
(Verb)

Words Related to Spy

Related words are words that are directly connected to each other through their meaning, even if they are not synonyms or antonyms. This connection may be general or specific, or the words may appear frequently together.