Definition from Wiktionary, the free dictionary
- (obsolete) To have the same value as.
- To counteract, counterbalance or neutralize.
- To compensate for.
- I am one of those who thinke their fruit can no way countervaile this losse.
- Upon balancing the account, the profit at last will hardly countervail the inconveniences that go along with it.
to counteract, counterbalance or neutralize
to compensate for