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Synonyms

spy on

Idioms  
  1. Secretly or furtively observe someone or something, as in The children loved spying on the grownups, or The company sent him to spy on the competitor's sales force. [Early 1600s]


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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The FSB's Centre 16 has previously been accused by Western intelligence agencies of using malware for decades to try to gain access to spy on countries around the globe.

From Barron's Jul. 13, 2026

He instead pointed to Wired reporting about New York Knicks owner Jim Dolan allegedly using cameras and security at the arena to spy on his critics.

From Salon Jul. 8, 2026

The official was one of two men found guilty of helping China spy on dissidents in the U.K.

From The Wall Street Journal May 13, 2026

Yuen denied commissioning Wai to carry out surveillance of Hong Kong dissidents based in London, including "never" having asked him to spy on pro-democracy activist Nathan Law.

From BBC Mar. 23, 2026

The ones that did—hippos and elephants—were too dangerous to spy on.

From "A Girl Named Disaster" by Nancy Farmer

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