Meaning & use
Surveilling
Last updated
Keeping close and continuous watch over a person, place, or activity, typically to gather information or detect wrongdoing.
See it in a sentence
The detective spent weeks surveilling the warehouse before making an arrest.
Privacy advocates worry that the app is quietly surveilling users' browsing habits.
A note on using this word
"Surveilling" is the present-participle form of "surveil," a verb that was itself back-formed from the noun "surveillance" in the 20th century.
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