counteract

Word parts

counter- + act

Pronunciation

• IPA ^(key): /ˌkaʊntərˈækt/

• Audio (UK)

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Verb

Plain form counteract

Third-person singular counteracts

Past tense counteracted

Past participle counteracted

Present participle counteracting

1. If something counteracts the effects of something else, it acts against those effects.

   Alcohol will counteract the effects of learning.

Related words

• counter
• act