Counteract

v. t.

1.

To act in opposition to; to hinder, defeat, or frustrate, by contrary agency or influence; as, to counteract the effect of medicines; to counteract good advice. [imp. & p. p. Counteracted; p. pr. & vb. n. Counteracting.]

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

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