surveillance

Definitions

The close observation of a person or group, especially one suspected of criminal activity.

Continuous monitoring of a process, activity, or area to maintain security or gather information.

Examples

The building is under constant surveillance to ensure the safety of its residents.

Security cameras provide 24-hour surveillance of the parking lot.

The police placed the suspect under covert surveillance for several weeks.

Synonyms

observation monitoring scrutiny vigilance supervision espionage reconnaissance

Antonyms

neglect disregard inattention privacy secrecy oblivion carelessness