[verb] oppose or check by a counteraction Synonyms: countercheck
[verb] oppose and mitigate the effects of by contrary actions; "This will counteract the foolish actions of my colleagues" Synonyms: countervail, neutralize, counterbalance
[verb] destroy property or hinder normal operations; "The Resistance sabotaged railroad operations during the war" Synonyms: sabotage, undermine, countermine, subvert, weaken
