counteract
Counteract (verb) means to reduce or cancel out the effect of something by acting in an opposing way. Example: “The medicine counteracts the side effects of the treatment.”
How to use counteract
Learner’s notesIn plain EnglishTo act against something in order to cancel out or lessen its effect.
Word forms
counteracted past tense, counteracts plural, counteracts singular
Fill the gap
Can you complete this real example?
The medicine _____ the side effects of the treatment.
Etymology
From counter- ("against") + act.
Synonyms
View more →Antonyms
Related words
Rhymes for counteract
See all rhymes for counteract →Frequently asked questions
What does “counteract” mean?
The word “counteract” means to reduce or cancel out the effect of something by acting in an opposing way. In plain terms, to act against something in order to cancel out or lessen its effect.
How do you pronounce “counteract”?
“Counteract” is pronounced KOWN-tuhr-akt (/ˈkaʊntəɹˌækt/ in IPA).
How do you use “counteract” in a sentence?
Here is “counteract” used in a sentence: “The medicine counteracts the side effects of the treatment.”
What is another word for “counteract”?
Words with a similar meaning to “counteract” include countervail, counterwork and remedy.
What is the opposite of “counteract”?
The opposite of “counteract” — its antonyms — are abet, assist, help, reinforce and support.
What part of speech is “counteract”?
“Counteract” is a verb.
Is “counteract” a common word?
“Counteract” is an uncommon word in modern English.