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Word

affect

verb B2
/əˈfɛkt/

To affect something is to influence it or cause it to change.

affect: To affect something is to influence it or cause it to change.

Meanings

verb

To influence or change something in some way.

verb

To cause someone to feel a particular emotion or to have an emotional impact on someone.

affect: To cause someone to feel a particular emotion or to have an emotional impact on someone.
noun

In psychology, an observable display of emotion shown in facial expression or tone.

affect: In psychology, an observable display of emotion shown in facial expression or tone.

Definition

To affect means to influence what happens to someone or something. It often describes how a situation, action, or event changes results, feelings, health, or decisions. In psychology, it can also mean an emotional state shown on someone’s face or in their voice.

Examples

  • Heavy rain can affect the commute.
  • The new rule will affect small businesses the most.
  • Her comments didn’t affect my decision.
  • Lack of sleep can affect your mood.
  • The movie’s ending really affect me.

Common mistake

Learners often confuse affect (usually a verb) with effect (usually a noun).