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Counteract Meaning in English

word

Definition

To do something that reduces, weakens, or cancels the effect of something else.

Usage & Nuances

Formal word, often used in science, medicine, or law. It usually appears with negative effects: 'counteract the side effects', 'counteract pollution'. Not used for direct physical fights—use 'fight' or 'oppose' instead.

Example Sentences

Coffee can sometimes counteract the effects of sleeping pills, so be careful.

natural

We need to counteract the rising pollution in our city.

basic

This medicine will counteract the effects of your allergy.

basic

They used special chemicals to counteract the poison.

basic

We need new policies to counteract the economic downturn.

natural

He tried to counteract his nervousness by taking deep breaths.

natural