Surveillance definition, a watch kept over a person, group, etc., especially over a suspect, prisoner, or the like: The suspects were under police surveillance. See more. DICTIONARY.COM

There are 500 surveillance-related words in total, with the top 5 most semantically related being observation, security, fbi, monitoring and reconnaissance. You can get the definition (s) of a word in the list below by tapping the question-mark icon next to it.

surveil - keep under surveillance; "The police had been following him for weeks but they could not prove his involvement in the bombing"

English Language Learners Definition of surveillance. : the act of carefully watching someone or something especially in order to prevent or detect a crime. See the full definition for surveillance in the English Language Learners Dictionary.

surveillance Many times, a person suspected of something illegal by the authorities is placed under surveillance , meaning he or she is closely watched to see if their suspicions are well-founded. If you break down the word surveillance you get the prefix sur , from the French word for "over" and the root veiller , meaning "to watch."

Find 32 ways to say SURVEILLANCE, along with antonyms, related words, and example sentences at Thesaurus.com, the world's most trusted free thesaurus. DICTIONARY.COM THESAURUS.COM

Surveillance - definition of surveillance by The Free Dictionary. Define surveillance. surveillance synonyms, surveillance pronunciation, surveillance translation, English dictionary definition of surveillance. n. 1. Close observation of a person or group, especially one under suspicion. 2. The act of observing or the condition of being observed.

Definition of surveillance in the Definitions.net dictionary. Meaning of surveillance. What does surveillance mean? Information and translations of surveillance in the most comprehensive dictionary definitions resource on the web.