spotter Synonyms

search parties locater flatfoot gumshoe signaller security guard secret agent witness watchman watcher watch warner vedette tracer spy sleuthhound observation post lookout man dick watch person watchtower espionage agent pickets TEC security officer secret service search party reconnoiterer private eye patroller identifier flagger double agent banksman night watchman sleuth signalman flecker flagman finder eye espier doter discoverer detector descrier blobber birder beholder beagle appropriator