Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “affect”

See all translations

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).
More examples

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)
What is the pronunciation of affect?
Add Cambridge dictionaries to your browser to your website

Definitions of “affect” in other dictionaries

Word of the Day

be as cold as ice

to be extremely cold

Word of the Day

Cleavage proves divisive in Cambridge’s words of 2014

by Alastair Horne,
December 19, 2014
​​​​ Other dictionaries may choose faddish novelties as their words of the year, but here at Cambridge, we like to do something different. We look for the words that have seen sudden surges in searches over the course of the year – words that have been baffling users of English and driven them

Read More 

cinderella surgery noun

December 15, 2014
cosmetic surgery to the feet We have all heard of people having nose jobs, boob jobs and liposuction – but now a new trend growing in popularity in America: Cinderella surgery.

Read More