spy on

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

The neighbors asked the Pierrats to trim their gum trees and Marc flew into a rage, ranting about a supposed plot to spy on them.

From Los Angeles Times

Although many Russians are worried about the new restrictions on WhatsApp and Telegram, and by the introduction of Max, the state already has vast means to spy on its citizens.

From BBC

There were new underwater and airborne drones that can spy on targets.

From BBC

Chinese students at UK universities are being pressured to spy on their classmates in an attempt to suppress the discussion of issues that are sensitive to the Chinese government, a new report suggests.

From BBC

It reminds us that Leno, the dude who media reporter Bill Carter alleged hid in a closet to spy on NBC executives and strategically brown-nosed his way into the “Tonight Show” job from there, knows what his audience wants to hear.

From Salon

Related Words

• stalk