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.

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

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

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

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.

Oct 16, 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 …

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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.

Apr 11, 2024 · The days of cloak and dagger spying look a bit different in the digital age. But the spy business itself is busy — and getting busier.

Sep 11, 2025 · Spies might seem like a throwback to earlier days of world wars and cold wars, but they are more common than ever—and they are targeting our nation’s most valuable secrets. …