Hypertext Webster Gateway: "counteract"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Counteract \Coun`ter*act"\ (koun`t?r-?kt"), v. t. [imp. & p. p.
{Counteracted}; p. pr. & vb. n. {Counteracting}.]
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.
From WordNet (r) 1.7 (wn)
counteract
v 1: act in opposition to [syn: {antagonize}, {antagonise}]
2: oppose or check by a counteraction [syn: {countercheck}]
3: oppose and mitigate the effects of by contrary actions;
"This will counteract the foolish actions of my
colleagues" [syn: {countervail}, {neutralize}, {counterbalance}]
4: destroy property or hinder normal operations; "The
Resistance sabotaged railroad operations during the war"
[syn: {sabotage}, {undermine}, {countermine}, {subvert}, {weaken}]
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