பொருள் : (military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors.
ஒத்த சொற்கள் : undercover agent
பொருள் : A secret watcher. Someone who secretly watches other people.
எடுத்துக்காட்டு :
My spies tell me that you had a good time last night.