English

Definition of counteract verb from the Oxford Advanced Learner's Dictionary

 

counteract

 verb
verb
BrE BrE//ˌkaʊntərˈækt//
 
; NAmE NAmE//ˌkaʊntərˈækt//
 
Verb Forms present simple I / you / we / they counteract
BrE BrE//ˌkaʊntərˈækt//
 
; NAmE NAmE//ˌkaʊntərˈækt//
 
he / she / it counteracts
BrE BrE//ˌkaʊntərˈækts//
 
; NAmE NAmE//ˌkaʊntərˈækts//
 
past simple counteracted
BrE BrE//ˌkaʊntərˈæktɪd//
 
; NAmE NAmE//ˌkaʊntərˈæktɪd//
 
past participle counteracted
BrE BrE//ˌkaʊntərˈæktɪd//
 
; NAmE NAmE//ˌkaʊntərˈæktɪd//
 
-ing form counteracting
BrE BrE//ˌkaʊntərˈæktɪŋ//
 
; NAmE NAmE//ˌkaʊntərˈæktɪŋ//
 
 
jump to other results
counteract something to do something to reduce or prevent the bad or harmful effects of something synonym counter These exercises aim to counteract the effects of stress and tension.Extra examples By pausing for a moment or two before speaking you will simply be counteracting a nervous tendency to rush headlong into everything. She liked to keep busy all the time to counteract the feelings of uselessness that overcame her whenever she had nothing to do. The thrust of the rocket engines counteracts gravity.
See the Oxford Advanced American Dictionary entry: counteract