spy Synonyms - page 2

gawp peeping tom ninjutsu ninja counterspy undercover agent whistleblower saboteur catch sight of confidential informant foreign agent infiltrator behold find glimpse informant inquisitor intelligencer investigator judas look lurcher note notice ferret eyeball eye betrayer bug creeper delator detect detective discern distinguish eavesdrop emissary espionage observe observer roper saw scout scouting see sighting sleeper sleuthhound spial spook