affect Meaning in the Cambridge English Dictionary
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Meaning of “affect” in the English Dictionary

"affect" in British English

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affectverb [T]

uk   us   /əˈfekt/

affect verb [T] (INFLUENCE)

B2 to have an ​influence on someone or something, or to ​cause a ​change in someone or something: Both ​buildings were ​badly affected by the ​fire. The ​divorce affected every ​aspect of her ​life. It's a ​disease that affects ​mainlyolderpeople. I was ​deeply affected by the ​film (= it ​causedstrongfeelings in me).
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affect verb [T] (PRETEND)

formal to ​pretend to ​feel or ​think something: To all his ​problems she affected ​indifference. formal mainly disapproving to ​start to ​wear or do something in ​order to make ​peopleadmire or ​respect you: At ​university he affected an ​upper-classaccent. He's ​recently affected a ​hat and ​cane.
(Definition of affect from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"affect" in American English

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affectverb [T]

 us   /əˈfekt/

affect verb [T] (INFLUENCE)

to have an ​influence on someone or something: The ​disease only affects ​cattle. I was ​deeply affected by the ​film.

affect verb [T] (PRETEND)

to ​pretend to be or have something: Since ​joining the ​band he’s affected a ​ridiculoussouthernaccent.
(Definition of affect from the Cambridge Academic Content Dictionary © Cambridge University Press)
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