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affect - definition and synonyms


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verb [transitive] affect pronunciation in American English /əˈfekt/
Word Forms
present tense
present participleaffecting
past tenseaffected
past participleaffected

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  1. 1
    to change or influence something. If something affects something else, it has an effect on it
    Did the newspapers really affect the outcome of the election?
    It is known that poor housing significantly affects educational achievement.
    1. a.
      to cause physical damage to something
      The disease affects many different organs of the body.
      The area has been badly affected by pollution.
    2. b.
      to have a strong effect on someones emotions
      She had been deeply affected by her parents’ divorce.
      My pleading didn’t seem to affect him at all.
  2. 2
    formal to behave as if you feel something that you do not or as if you are a type of person that you are not
    She affected a look of disinterest as she glanced at his newspaper.


a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

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an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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