To consider and compare or assess:
To compensate is to pay someone for services performed, to repay someone for some wrong or that something positive exists to make up for something negative.
To act directly against; check, neutralize, or undo the effect of with opposing action
To be a counterbalance to; offset
To make ineffective; destroy or counteract the effectiveness, force, disposition, etc. of
Outweigh is to be heavier than, or to be more important or more valuable.
To pay off (a mortgage or note)
To give an order or orders; request that something be done or supplied.
To take the place of another:
Find another word for countervail. In this page you can discover 13 synonyms, antonyms, idiomatic expressions, and related words for countervail, like: balance, compensate, counteract, counterbalance, counterpoise, make up, offset, set off, neutralize, outweigh and redeem.