act in opposition to

[ Syn: antagonize , antagonise ]

oppose or check by a counteraction

[ Syn: countercheck ]

oppose and mitigate the effects of by contrary actions; This will counteract the foolish actions of my colleagues

[ Syn: countervail , neutralize , counterbalance ]

destroy property or hinder normal operations; The Resistance sabotaged railroad operations during the war

[ Syn: sabotage , undermine , countermine , subvert , weaken ]