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
After dark, spy on space with one of the Lowell Observatory’s many public telescopes.
—
Stephanie Vermillion, Outside, 4 Jan. 2026
In terms of their internal intelligence, who spies on who inside to make sure there are no traitors, those are all Cubans.
—NBC news, 4 Jan. 2026
Three years later, Hale is working for the Orphanage, a shadowy American intelligence agency that spies on all the less-shadowy American intelligence agencies — watching the watchers.
—Robert Lloyd, Twin Cities, 30 Dec. 2025
This was issued a month after Nixon’s resignation in the wake of the Watergate scandal, which involved Nixon’s 1972 reelection campaign spying on his political enemies.
—Stewart Ulrich, The Conversation, 15 Dec. 2025
See All Example Sentences for spy on
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Stephanie Vermillion, Outside, 4 Jan. 2026
In terms of their internal intelligence, who spies on who inside to make sure there are no traitors, those are all Cubans.
—NBC news, 4 Jan. 2026
Three years later, Hale is working for the Orphanage, a shadowy American intelligence agency that spies on all the less-shadowy American intelligence agencies — watching the watchers.
—Robert Lloyd, Twin Cities, 30 Dec. 2025
This was issued a month after Nixon’s resignation in the wake of the Watergate scandal, which involved Nixon’s 1972 reelection campaign spying on his political enemies.
—Stewart Ulrich, The Conversation, 15 Dec. 2025
See All Example Sentences for spy on
Cite this Entry
“Spy on.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spy%20on. Accessed 9 Jan. 2026.
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