The word "spy" refers to a person who secretly collects and reports information about the activities, plans, or intentions of a target, often for a government, military, or organization. Spies are typically involved in espionage, which is the practice of gaining secret information through covert methods.
The word "spy" originates from the Old French "espier," which means to "look at" or "watch." It traces back further to the Latin "specere," meaning "to see." The term has evolved over centuries to signify someone who observes in secret.