counteract

[koun-ter-akt]

verb (used with object)

to act in opposition to; frustrate by contrary action.

Nearby words

  1. counter-boulle,
  2. counter-ion,
  3. counter-reformation,
  4. counter-revolution,
  5. counter-revolutionary,
  6. counterargument,
  7. counterattack,
  8. counterattraction,
  9. counterbalance,
  10. counterbid

Origin of counteract

First recorded in 1670–80; counter- + act

Related forms
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for counteract


British Dictionary definitions for counteract

counteract

verb

(tr) to oppose, neutralize, or mitigate the effects of by contrary action; check
Derived Formscounteraction, nouncounteractive, adjectivecounteractively, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for counteract

counteract

v.

1670s, from counter- + act (v.). Related: Counteracted; counteracting.

Online Etymology Dictionary, © 2010 Douglas Harper