spy on

phrasal verb

spied on; spying on; spies on
: to watch (someone) secretly
He spies on his neighbors.
Have you been spying on me?

Examples of spy on in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Chadwick’s movie, written by Ronnie Christensen (best known for Passengers), follows Alba as Eden, an enigmatic spy on a covert and dangerous mission. Lily Ford, HollywoodReporter, 11 Nov. 2025 Currently in production in Queensland, Australia, The Mark follows Eden (Alba), an enigmatic spy on a covert and dangerous mission. Matt Grobar, Deadline, 10 Nov. 2025 The authors, including Loeb, argued that 3I/ATLAS could have been sent by a hidden and nefarious alien force, perhaps to spy on humans. Abigail Adams, PEOPLE, 10 Nov. 2025 London — Germany and the United Kingdom have warned of the growing threat posed by Russian and Chinese space satellites, which have been regularly spotted spying on satellites used by Western powers. Lauren Kent, CNN Money, 9 Nov. 2025 See All Example Sentences for spy on

Browse Nearby Words

Cite this Entry

“Spy on.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spy%20on. Accessed 18 Nov. 2025.

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!