counteract counteract  /ˈkaʊn tə ˌrækt/


  1. (v) act in opposition to
  2. (v) oppose or check by a counteraction
  3. (v) oppose and mitigate the effects of by contrary actions
  4. (v) destroy property or hinder normal operations


  1. She's a fresh face to counteract Obama's message of change, and she's about as far outside the Beltway as you can get.
  2. Later, miners took to chewing it to last out their long day, andinos to counteract high-altitude sickness.
  3. Also makes explicit appeal for Internet donations in speech to counteract Obama's war chest.


  1. Scientists put backpacks on dragonflies to track their brains in flight

    The brain of a dragonfly has to do some serious calculations — and fast — if it hopes to nab a mosquito or midge in midair. It has to predict the trajectory of its prey, plot a course to intersect it, then make adjustments on the fly to counteract any evasive maneuvers.
    on June 18, 2013     Source: Duke University

  2. NYC, San Francisco aim to stop 'Apple picking' phone muggings

    Smart phone theft is up nationwide, and especially in large cities. San Francisco District Attorney George Gascon and New York Attorney General Eric Schneiderman hope to counteract it. 
    on June 14, 2013     Source: The Christian Science Monitor

Word of the Day
cynic cynic
/ˈsɪ nɪk /