9 entries under informer topic. ×

2
investigator(noun, plant, agent, operative)
1
intelligencer(noun, plant, agent, operative)
1
mole(noun, plant, agent, operative)
1
plant(noun, agent, operative, mole)
1
sleeper(noun, plant, agent, operative)
1
sleuth(noun, plant, agent, spy, operative)
1
snoop(noun, plant, agent, spy, operative)
1
spook(noun, plant, agent, operative)
0
agent(noun, plant, operative, mole)
10 years ago|8.4k views|share |citing 
APASmart Define. (2016). observer thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/observer/thesaurus/synonyms
ChicagoSmart Define. 2016. "observer thesaurus" https://smartdefine.org/observer/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, observer thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/observer/thesaurus/synonyms>.
MLASmart Define. "observer thesaurus" 26 February 2016. Web. 22 September 2026. <https://smartdefine.org/observer/thesaurus/synonyms>