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English definition of “activity”

activity

noun [U] (MOVEMENT)    /ækˈtɪv.ɪ.ti/ US  /-ə.t̬i/
B2 the situation in which a lot of things are happening or people are moving around: There was a lot of activity in preparation for the Queen's visit. Economists are concerned by the low level of economic activity. There was a sudden flurry of activity when the director walked in.Acting and actsDealing with things or people
(Definition of activity noun (MOVEMENT) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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