Counteract - Definition
counteract
v 1: act in opposition to [syn: antagonize, antagonise,
counteract]
2: oppose or check by a counteraction [syn: countercheck,
counteract]
3: oppose and mitigate the effects of by contrary actions; "This
will counteract the foolish actions of my colleagues" [syn:
counteract, countervail, neutralize, counterbalance]
4: destroy property or hinder normal operations; "The Resistance
sabotaged railroad operations during the war" [syn:
sabotage, undermine, countermine, counteract,
subvert, weaken]