Thesaurus.com Dictionary.com

espionage agent

NOUN

double agent

Synonyms

STRONGEST

undercover agent

WEAK

counterspy mole plant spy

NOUN

spy

Synonyms

STRONGEST

agent detective informer investigator mole operative secret agent secret service undercover agent

STRONG

emissary lookout observer patrol plant scout sleeper sleuth snoop spotter watcher

WEAK

double agent foreign agent inside agent intelligencer plumber

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.