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affect

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verb [transitive] affect pronunciation in American English /əˈfekt/ 
Word Forms
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present tense
I/you/we/theyaffect
he/she/itaffects
present participleaffecting
past tenseaffected
past participleaffected

Related dictionary definitions

  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 someone's 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.

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