counterbalance

COUNTERBALANCE, v.t. [counter and balance.] To weigh against; to weigh against with an equal weight; to act against with equal power or effect; to countervail A column of thirty inches of quicksilver, and a column of thirty-two feet of water, counterbalance the weight of a like column of the whole atmosphere. The pleasures of sin never counterbalance the pain, misery and shame which follow the commission of it.

COUNTERBALANCE, n. Equal weight, power or agency acting in opposition to any thing.