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English definition of “reaction”

reaction

noun [U] (NO CHANGE)    /riˈæk.ʃən/ disapproving
the belief or principle that there should be no social or political change , and the attempt to stop such change from happening : We must not allow reaction to stand in the way of progress .Custom, tradition and conformity
(Definition of reaction noun (NO CHANGE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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