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English definition of “activity”

activity

noun   /ækˈtɪvəti/
EVENT [C] A2 something that you do for enjoyment, especially an organized event: The centre offers a range of activities, such as cycling, swimming, and tennis.Pastimes - general words
WORK [C, U] B2 the work of a group or organization to achieve an aim: criminal/terrorist activities Acting and actsDealing with things or people
MOVEMENT [U] B2 a situation in which a lot of things are happening or people are moving around: There was a sudden flurry of activity (= short period of activity) at the back of the hall. → Opposite inactivity (inactive)Busy and activeHurrying and doing things quickly
(Definition of activity noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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