1
asperser(noun, opposition, agent, villain, rebel)
1
assailant(noun, opposition, agent, villain, rebel)
1
assassin(noun, opposition, agent, villain, rebel)
1
attacker(noun, opposition, agent, villain, rebel)
1
attestant
1
attestator
1
attester
1
authority
1
babbler(gossip, canary, tattle, palaver, crier)
1
backbiter(noun, opposition, agent, villain, rebel)
1
backslider(fraud, phony, spy, crook, trickster)
1
bad person(expression, opposition, agent, villain, rebel)
1
bandit(noun, opposition, agent, villain, rebel)
1
bigot
1
bird dog(expression, agent, spy, gumshoe, investigator)
1
blabberer
1
bloodhound(agent, spy, gumshoe, investigator, dick)
1
briefer
1
bull(agent, spy, gumshoe, investigator, dick)
1
bystander
11 years ago|10k views|share |citing 
APASmart Define. (2015). informer thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/informer/thesaurus/synonyms
ChicagoSmart Define. 2015. "informer thesaurus" https://smartdefine.org/informer/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, informer thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/informer/thesaurus/synonyms>.
MLASmart Define. "informer thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/informer/thesaurus/synonyms>