27 entries under mole topic. ×

24
watcher(noun, see, plant, watch, guard)
5
spy(noun, person, plant, watch, guard)
3
picket(noun, plant, watch, guard, agent)
2
investigator(noun, plant, agent, operative, informer)
2
lookout(noun, plant, watch, guard, agent)
1
detective(noun, plant, watch, guard, agent)
1
double agent(noun, expression, plant, agent, operative)
1
emissary(noun, plant, agent, operative)
1
espionage agent(noun, expression, plant, agent, operative)
1
foreign agent(noun, expression, plant, agent, operative)
1
informer(noun, plant, agent, operative)
1
inside agent(noun, expression, plant, agent, operative)
1
intelligencer(noun, plant, agent, operative, informer)
1
operative(noun, plant, agent, infiltrator)
1
patrol(noun, plant, watch, guard, agent)
1
plant(noun, agent, operative, informer)
1
scout(noun, plant, watch, guard, agent)
1
secret agent(noun, expression, plant, agent, operative)
1
secret service(noun, expression, plant, agent, operative)
1
sleeper(noun, plant, agent, operative, informer)
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APASmart Define. (2016). observer thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/observer/thesaurus/synonyms
ChicagoSmart Define. 2016. "observer thesaurus" https://smartdefine.org/observer/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, observer thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/observer/thesaurus/synonyms>.
MLASmart Define. "observer thesaurus" 26 February 2016. Web. 20 September 2026. <https://smartdefine.org/observer/thesaurus/synonyms>