counteract


coun·ter·act

transitive verb \ˌkan-tər-ˈakt\

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

Full Definition of COUNTERACT

:  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>
coun·ter·ac·tion \-ˈak-shən\ noun
coun·ter·ac·tive \-ˈak-tiv\ adjective

Examples of COUNTERACT

  1. The drug will counteract the poison.
  2. <this medication will counteract the symptoms but it won't kill the infection>

First Known Use of COUNTERACT

1655

coun·ter·act

transitive verb \ˌkant-ə-ˈrakt\   (Medical Dictionary)

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>
coun·ter·ac·tion \-ˈrak-shən\ noun

Browse

Next Word in the Dictionary: counteractant
Previous Word in the Dictionary: counter-
All Words Near: counteract

Seen & Heard

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

Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
Join Us on FB & Twitter
Get the Word of the Day and More