Definition of counteract in English:

counteract

verb

[WITH OBJECT]
  • Act against (something) in order to reduce its force or neutralize it.

    ‘should we deliberately intervene in the climate system to counteract global warming?’
    • ‘Formally, this equilibrium is stable, meaning that small deviations from it are counteracted by the system's dynamics.’
    • ‘These measures would, moreover, sharply reduce revenue to money-strapped state governments, counteracting the Federal stimulus by forcing many of them to cut back on spending.’
    • ‘The resulting charge neutralization counteracts the normal repulsion of the negatively charged phosphate backbone and allows a considerable narrowing of the DNA grooves on the inside.’
    • ‘There must, therefore, be some hidden advantage to being left-handed that counteracts the risks, but the problem for biologists was trying to work out what this advantage was.’
    • ‘Going back into schools also counteracts the fall in the number of male teachers and their tendency to give up time to spread the word about their passion for rugby.’
    • ‘The argument was that the discount rate should be reduced to counteract the effect of the higher rate tax on the award.’
    • ‘Particularly noteworthy is the accounting of the use of such operations by our naval forces worldwide and the positive impact they had in counteracting enemy planning and operations.’
    • ‘The precise method by which Aloe Vera works is not yet fully understood, but it is a great stimulator of the body's own system, which counteracts disease and disorder.’
    • ‘Inverters can reduce overall crosstalk by counteracting the effects of switching, as long as the victim trace runs alongside both the native signal and its inverted form.’
    • ‘Finally, it has been suggested that a pH shift could serve as a signal to induce systems to counteract imbalances.’
    • ‘Unequally spaced white stripes painted across the road leading up to an off-ramp have been used to create an illusion that counteracts motion adaptation and reduces driving speed.’
    • ‘Coffee counteracts the effects of a head cold to help you function normally.’
    • ‘Some force in the universe not only counteracts gravity but pushes the galaxies in the universe apart ever faster.’
    • ‘Dark energy is a mysterious pressure that counteracts gravity, forcing the universe to expand faster than it otherwise would.’
    • ‘Organic matter neutralises or counteracts many disinfectants.’
    • ‘For example it may be that heroin addicts choose heroin because it counteracts the rage and aggression they feel, while cocaine may be used to medicate against depression.’
    • ‘High-intensity resistance exercise training counteracts muscle weakness and physical frailty in very elderly people.’
    • ‘Dynamic Drive is another option, fitted to the car we drove; it counteracts body lean to force the BMW level in corners.’
    • ‘He didn't, therefore, possess adrenaline - the life-saving drug which counteracts the allergic reaction people have when sensitive to bee and wasp stings.’
    • ‘Taking a top-down approach already implies a categorisation attempt that is outside of the sphere of influence of the wiki contributors, which kind of counteracts the point of a wiki.’
    • ‘Allegedly there's no virus checking software designed to counteract it yet, but there could be a cure by the end of today.’
    prevent, thwart, frustrate, foil, impede, curb, restrain, forestall, hinder, hamper, baulk, oppose, act against, stall, check, resist, withstand, defeat, put a stop to, bring an end to
    offset, counterbalance, balance, balance out, cancel out, even out, counterpoise, countervail, compensate for, make up for, remedy
    View synonyms

Pronunciation

counteract

/ˌkaʊn(t)ərˈækt//ˌkoun(t)ərˈakt/