counteract

verb
coun·​ter·​act | \ ˌkau̇n-tər-ˈakt How to pronounce counteract (audio) \
counteracted; counteracting; counteracts

Definition of counteract

transitive verb

: to make ineffective or restrain or neutralize the usually ill effects of by means of an opposite force, action, or influence a drug used to counteract fatigue

Keep scrolling for more

Other Words from counteract

counteraction \ ˌkau̇n-​tər-​ˈak-​shən How to pronounce counteract (audio) \ noun
counteractive \ ˌkau̇n-​tər-​ˈak-​tiv How to pronounce counteract (audio) \ adjective

Examples of counteract in a Sentence

The drug will counteract the poison. this medication will counteract the symptoms but it won't kill the infection
Recent Examples on the Web There are two categories of ingredients found in moisturizing skincare products that can help maintain the ideal water content in the outer layer of skin (a.k.a. the stratum corneum) to counteract dryness. Sabina Wizemann, Good Housekeeping, "What You Need to Know About Occlusives in Skincare," 28 Dec. 2020 At this point, Marazuela concludes, dropping evaporation rates can no longer counteract the effects of brine pumping. Ian Morse, Quartz, "Chile’s new constitution could rewrite the story of lithium mining," 22 Dec. 2020 Everyone else should be watched for 15 minutes -- and immunization providers should have medical supplies, such as epinephrine that can counteract allergic reactions, on hand. oregonlive, "COVID-19 vaccines are in Oregon and more are on the way. What you need to know: Q&A," 18 Dec. 2020 Selling ice cream could help counteract the seasonal sales slump. CNN, "This company conquered the ice cream market. Home delivery is the final frontier," 14 Nov. 2020 As a whole, these can be difficult to counteract, but the major platforms have committed to either delete or tag these posts as suspect. Sam Dean, Los Angeles Times, "How Facebook and Twitter plan to handle election day disinformation," 2 Nov. 2020 For the eyes, concentrate on the under eyes and inner corners to effectively counteract dark circles. Lauren Valenti, Vogue, "A Guide to Ageless Makeup for Women Over 50, According to an Industry Veteran," 12 Oct. 2020 In trying to counteract harmful stereotypes, the show has succeeded in doing something altogether stranger: erasing diversity through the act of depicting it. Cheri Lucas Rowlands, Longreads, "Longreads Best of 2020: Arts and Culture," 16 Dec. 2020 Rather than automatically impose tariffs to counteract British divergence, the two sides are negotiating other ways to resolve disputes over state aid and other competition policies. New York Times, "Going ‘the Extra Mile,’ Britain and E.U. Give Brexit Talks More Time," 13 Dec. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'counteract.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of counteract

1655, in the meaning defined above

Keep scrolling for more

Learn More about counteract

Time Traveler for counteract

Time Traveler

The first known use of counteract was in 1655

See more words from the same year

Statistics for counteract

Last Updated

8 Jan 2021

Cite this Entry

“Counteract.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/counteract. Accessed 15 Jan. 2021.

Keep scrolling for more

More Definitions for counteract

counteract

verb
How to pronounce counteract (audio)

English Language Learners Definition of counteract

: act against (something) : to cause (something) to have less of an effect or to have no effect at all

counteract

verb
coun·​ter·​act | \ ˌkau̇n-tər-ˈakt How to pronounce counteract (audio) \
counteracted; counteracting

Kids Definition of counteract

: to make (something) have less of an effect or no effect at all The antidote counteracts the poison.

counteract

transitive verb
coun·​ter·​act | \ ˌkau̇nt-ə-ˈrakt How to pronounce counteract (audio) \

Medical Definition of counteract

: to make ineffective or restrain or neutralize the usually ill effects of by an opposite force vitamin K counteracts the effects of warfarin

Other Words from counteract

counteraction \ -​ˈrak-​shən How to pronounce counteract (audio) \ noun

Keep scrolling for more

Comments on counteract

What made you want to look up counteract? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Words of Snow and Ice Quiz

  • image1037863653
  • Which of the following refers to thin, bending ice, or to the act of running over such ice?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!