American Dictionary

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Definition affect in American English

affect verb

[transitive] verb
/əˈfekt/
1

to change or influence something. If something affects something else, it has an effect on it

Example

Did the newspapers really affect the outcome of the election?

Synonyms and related words
1.1

to cause physical damage to something

Example

The disease affects many different organs of the body.

Example

The area has been badly affected by pollution.

Synonyms and related words
1.2

to have a strong effect on someone's emotions

Example

She had been deeply affected by her parents' divorce.

Example

My pleading didn't seem to affect him at all.

Synonyms and related words
2

to behave as if you feel something that you do not or as if you are a type of person that you are not

Example

She affected a look of disinterest as she glanced at his newspaper.

Synonyms and related words
Definition affect in American English