An action performed in opposition to another action.

To have a contrary or opposing effect or force on / To deliberately act in opposition to, to thwart or frustrate

present participle of counteract

Third-person singular simple present indicative form of counteract

plural of counteract

simple past tense and past participle of counteract

That counteracts

An act of retaliation; a counterattack / Any action in opposition to a previous action.

plural of counteraction

In a counteractive manner.