Vocab5000
Dictionary CEFR Levels IELTS & TOEFL Expressions Games Download App

surveillance

noun C1 Formal

Meaning

Surveillance refers to the systematic observation or monitoring of individuals, groups, or environments, often employed by governmental or organizational entities to gather information for security, regulatory, or research purposes. It encompasses various
💡 While "surveillance" is often associated with negative connotations related to privacy infringement, it can also be used in neutral contexts, such as public health monitoring or research, where the intent is to ensure safety or gather data for beneficial outcomes.

Example Sentences

Surveillance plays a crucial role in modern security and data analysis .
The company increased surveillance to ensure compliance with safety regulations .
The company increased surveillance to improve security in the building .
The company increased surveillance to protect its confidential data .

Word in Context

Every evening a small research team gathers at the town square to conduct unobtrusive surveillance of pedestrian flows , hoping to identify patterns that might improve public space design . They set up lightweight cameras and take systematic notes , while talking quietly so as not to influence people's behaviour . Although the work demands patience , the researchers value clear consent procedures and open communication with local residents , which helps maintain trust . Over several weeks they compare morning and evening counts , noting subtle shifts after minor changes to benches and lighting . In the end , their report recommends a few practical adjustments that could make the square more welcoming without altering its character .

Common Phrases

mass surveillance surveillance technology surveillance state

Never forget "surveillance"

Set a daily goal, reinforce with word cards and games, and track your progress in the Vocab5000 app — learn every C1 level word permanently with our science-based repetition system.

Vocab5000