184 entries under noun topic. ×

2
guide(watch, spy, lookout)
2
inventor
2
marker
2
observer(plant, watch, guard, agent)
2
operative(plant, agent, mole, gumshoe)
2
pathfinder(watch, spy, lookout)
2
patrol(plant, case, watch, overlook)
2
placer
2
reconnoiterer(watch, guard, spy, lookout)
2
secret agent(expression, plant, agent, operative)
2
siter
2
stainer
2
watchkeeper
1
agent(plant, operative, informer, mole)
1
beholder
1
belvedere(case, watch, overlook, guard)
1
biter
1
brander
1
bunker
1
contactor
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APASmart Define. (2015). spotter thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/spotter/thesaurus/synonyms
ChicagoSmart Define. 2015. "spotter thesaurus" https://smartdefine.org/spotter/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, spotter thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/spotter/thesaurus/synonyms>.
MLASmart Define. "spotter thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/spotter/thesaurus/synonyms>