2
blotter
2
dick
2
doter
2
espionage agent(noun, expression, plant, agent, operative)
2
flatfoot
2
flecker
2
guide(noun, watch, spy, lookout)
2
inventor
2
look-out
2
marker
2
observer(noun, plant, watch, guard, agent)
2
operative(noun, plant, agent, mole, gumshoe)
2
pale
2
pathfinder(noun, watch, spy, lookout)
2
patrol(noun, plant, case, watch, overlook)
2
patrolman
2
placer
2
private eye
2
reconnoiterer(noun, watch, guard, spy, lookout)
2
secret agent(noun, expression, plant, agent, operative)
11 years ago|7.3k views|share |citing 
APASmart Define. (2015). spotter thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/spotter/thesaurus/synonyms
ChicagoSmart Define. 2015. "spotter thesaurus" https://smartdefine.org/spotter/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, spotter thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/spotter/thesaurus/synonyms>.
MLASmart Define. "spotter thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/spotter/thesaurus/synonyms>