1. (v. t.) To offset; to act against with equal force\, power, or effect; to thwart or overcome by such action; to furnish an equivalent to or for; to counterbalance; to compensate.

2. (n.) Power or value sufficient to obviate any effect; equal weight, strength, or value; equivalent; compensation; requital.

accommodate adjust amend antagonize atone for balance be antipathetic be at cross-purposes be inimical be opposed to beat against cancel clash collide compensate conflict conflict with confute contradict contrapose contrast with contravene controvert coordinate correct counter counteract counterattack counterbalance countercheck counterpoise counterpose counterweigh counterwork cross equalize equate equiponderate even even up fit foil frustrate go against go counter to integrate interfere with join the opposition juxtapose in opposition level lock horns make up meet head-on militate against not abide offset oppose oppugn outweigh overcome play at cross-purposes poise proportion protest rectify redeem resist run against run counter to set off square square up strike a balance surmount swim upstream take issue with thwart traverse vote against withstand work against