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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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Previous concerns over drone safety in Europe largely focused on suspected Russian missions to fly drones over military bases, either to spy on them or disrupt flight paths.

From The Wall Street Journal ● Oct. 8, 2026

The 33-year-old apologised in June after an EFL independent disciplinary commission found he had orchestrated a "contrived and determined plan" to spy on Oxford United, Ipswich Town, then Middlesbrough before the play-off semi-final.

From BBC ● Sep. 21, 2026

Photoreconnaissance satellites spy on what adversaries are doing.

From Slate ● Sep. 17, 2026

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

Luckily for Deane, van Zandt was soon caught up in a romantic adventure and vanished from Paris, never to spy on Deane again.

From "George Washington, Spymaster" by Thomas B. Allen

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