Espionage, spying, or intelligence gathering, as a subfield of the intelligence field, is the act of obtaining secret, confidential, or in some way valuable information.

Phrasal verb spy on someone/something (Definition of spying from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

The meaning of SPY is to watch secretly usually for hostile purposes. How to use spy in a sentence.

Espionage is defined as the act of spying or using spies, agents, assets, and intelligence officers, as well as technology, to collect secret information, usually through illegal means.

1. To engage in espionage. 2. To investigate or observe something, especially in secret: spying into the neighbor's activities.

/ˈspaɪɪŋ/ IPA guide Other forms: spyings Definitions of spying noun keeping a secret or furtive watch see more

Nov 7, 2025 · How do spies communicate secretly with their home countries? Who was the most famous spy in history and what did they do? What tools and gadgets do real spies use compared to movie …

Spying is the act or process of finding out secret information for a country or organization about other countries or organizations. ...a ten-year sentence for spying.

Spying is a tense and often deadly way for governments to gather secret information from their enemies. Learn how spies are recruited and how they obtain information.

Spy definition: a person employed by a government to obtain secret information or intelligence about another, usually hostile, country, especially with reference to military or naval affairs.. See examples …