Definition

To act against something in order to reduce its force or neutralize it.

Example

The medicine is designed to counteract the effects of the poison.

Tense Forms

Conversation

I heard that exercise can really help counteract stress.

That's true! It always makes me feel better after a workout.

I should start going for runs to counteract my anxiety.

Definitely! Fresh air does wonders for the mind.

Synonyms & Antonyms

Root Explanation

Counteract → It is formed from "counter-" (meaning against) and "agere" (meaning to act). The word describes the act of acting against something, often to neutralize or oppose its effects.

Memory Tip

Think of acting 'against' ('counter-') something — that's why counteract means to take action to oppose or neutralize it.

Visually Confused Words