3 syllables: coun, ter, act. Stress on coun.
KOWN-tur-akt
/ˈkaʊntɚˌækt/
counteract is pronounced KOWN-tur-akt (/ˈkaʊntɚˌækt/). It has three syllables (coun-ter-act), with the stress on "coun". Counteract means to act against something in order to reduce its harmful effects or to neutralize it. It involves taking deliberate steps to offset a force, influence, or condition, often through countermeasures, prevention, or corrective action. The term is widely used in science, medicine, policy, and everyday problem-solving contexts.
Counteract means to act against something in order to reduce its harmful effects or to neutralize it. It involves taking deliberate steps to offset a force, influence, or condition, often through countermeasures, prevention, or corrective action. The term is widely used in science, medicine, policy, and everyday problem-solving contexts.
"The nurse prescribed a treatment to counteract the side effects of the medication."
"Policy makers introduced new regulations to counteract pollution."
"The antidote was given to counteract the toxin."
Pronounce it as /ˈkaʊn.tərˌækt/ in most dialects. Start with the stressed syllable KAUN (like “cow”), the second syllable sounds like “ter” with a schwa-like vowel, and finish with “act” where /æ/ is as in “cat” and the final /kt/ is released crisply. Place the tongue high for /k/, lift the tip for /t/, and finish with a compact /kt/ cluster. You’ll notice the stress shifts slightly to the second syllable in the verb form when emphasis falls there: kaun-TUR-akt. Audio reference: listen to native speakers on Pronounce or Forvo to feel the exact mouth openings.
Two common errors are misplacing the stress (saying /ˈkaʊnˌtæ.rækt/ or /ˈkaʊnˌtəræk/) and mispronouncing the second syllable as a full /tər/ with a rarer schwa. Correct practice keeps stress on the first syllable: /ˈkaʊn.tərˌækt/. Also, many learners shorten the final consonant cluster, producing /-ækt/ as /-æk/; ensure you release the final /k/ clearly after /t/ to avoid an extra syllable blending.
In US/UK/AU, the main differences are vowel quality of /aʊ/ and the rhoticity of /r/. US and AU typically retain a rhotic /r/ in /tər/ (sound like ter with rhotic r), while some UK accents may have a looser /ə/ in the middle and a non-rhotic pattern in careful speech. The primary stress remains on the first syllable: /ˈkaʊn.tərˌækt/ across dialects, but Australians may have a slightly higher vowel in /aʊ/ and a more centralized /ə/ in the middle. In connected speech, US speakers keep a clearer /r/; UK speakers may reduce /r/ to a non-rhotic vowel before a consonant.
Three challenges: the /aʊ/ diphthong can be tricky, especially for learners whose native language has a monophthong. The /t/ + /ər/ sequence requires keeping the tongue near the alveolar ridge while curling to the schwa-ish /ə/ before /r/ in rhotic accents. Finally, the final /kt/ cluster demands a crisp stop release without adding an extra vowel. Practice by isolating each sound, then linking them in a single smooth motion.
The key is the -tract segment: the sequence /tər/ often slices quickly into a schwa or reduced vowel before the /ækt/, which can cause speakers to misplace the stress or lengthen the middle syllable. Keeping a clean, short /t/ followed by a light /ər/ and then a sharp /ækt/ helps the word stay natural. Use minimal pair practice with words like “contact” to feel the contrast in syllable timing.
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Counteract derives from the combination of the prefix counter- meaning against or in opposition, and act, from Old French actes and Latin agere meaning to do or drive. The prefix counter- appears in English from the Middle English period, denoting opposition or opposition-based action. The first part, counter-, has roots in Latin contra via Old French contreman, evolving to the modern sense of opposing or opposing action. Act originates from Latin agere through Old French agir and Middle English acten, meaning to do or to drive. The compound counteract appears in English by the 17th century, with usage in legal, medical, and scientific discourse to describe actions taken to negate or neutralize effects, consequences, or forces. Over time, counteract has maintained a precise, technical tone in formal writing, but remains common in everyday language when describing preventive or corrective measures. Its semantic evolution reflects a shift from literal “acting against” to broader connotations of neutralizing or diminishing undesirable effects across domains such as medicine, environmental science, and policy. First known uses are documented in scientific and legal texts in the 1600s, gradually spreading to general usage as interdisciplinary communication grew. Subsequent centuries have seen the term become a staple in discussions of risk management and tactical responses to adverse conditions.
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💡 These words have similar meanings to "counteract" and can often be used interchangeably.
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Words that rhyme with "counteract"
-act sounds
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