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Counteract Verb Effects Merriam Webster's Collegiate Coun·Ter·Act Transitive  To

Title counteract
Text
Merriam-Webster's Collegiate Dictionary
coun·ter·act

 \\ˌkau̇n-tər-ˈakt\\ transitive verb
 DATE  1655
: 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
English Etymology
counteract
  1670s, from counter- + act.
Oxford Advanced Learner's Dictionary-牛津双解-OALD7
counteract
coun·ter·act 7kauntEr5Akt / verb[VN]
   to do sth to reduce or prevent the bad or harmful effects of sth
   抵制;抵消;抵抗
   SYN  
counter
 :
   These exercises aim to counteract the effects of stress and tension. 
   这些训练旨在抵消压力与紧张的影响。 
Merriam-Webster's Collegiate Thesaurus-11th Edition
v. Function: verb 

Synonyms: 
NEUTRALIZE
, annul, cancel (out), countercheck, frustrate, negate, negative, redress 
Related Words: correct, fix, rectify, right 
Contrasted Words: cooperate, coordinate, synergize; back, reinforce, support
Webster's Third New International Dictionary, Unabridged
coun·ter·act
\|kau̇ntə|rakt\ transitive verb
(-ed/-ing/-s)
Etymology: counter- + act
: to act in opposition to : make ineffective by opposite force :mitigate ill effects of : 
check
offset
neutralize
nullify
 < the spontaneous physiological processes which counteractdisease before medical science comes into play — Havelock Ellis >
Synonyms: see 
neutralize

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