1
mole(noun, plant, watch, agent, spy)
1
naval-intelligence man
1
night watchman
1
observation(noun, case, watch, overlook, guard)
1
observation sensor(noun, search, device, detect, sensor)
1
officer
1
outlook(noun, case, watch, guard, post)
1
overlook(noun, case, watch, guard, post)
1
patcher
1
patroller
1
perceiver
1
pincher
1
piper
1
piquet
1
plant(noun, agent, operative, informer, mole)
1
police officer
1
positioner
1
poster
1
private detective(noun, expression, idiom, private)
1
private dick
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APASmart Define. (2015). spotter thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/spotter/thesaurus/synonyms
ChicagoSmart Define. 2015. "spotter thesaurus" https://smartdefine.org/spotter/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, spotter thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/spotter/thesaurus/synonyms>.
MLASmart Define. "spotter thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/spotter/thesaurus/synonyms>