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English definition of “affect”

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affect

verb [T] uk   /əˈfekt/ us  

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 mainly older people. I was deeply affected by the film (= it caused strong feelings 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 people admire or respect you: At university he affected an upper-class accent. He's recently affected a hat and cane.
(Definition of affect from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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