surveillance

🇺🇸 /sɜːrˈveɪləns/ 🇬🇧 /sɜːˈveɪləns/
Frequency
Difficulty
Tags TOP10000Oxford5000
noun
C1

the act of watching someone or something closely, often to prevent crime or gather information

Police used surveillance cameras to watch the building for suspicious activity.

translation

n. the act of watching someone or something closely, often to prevent crime or gather information

Word Forms

Plural surveillances