Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb countervail
2 senses of countervail
Sense 1
offset, countervail -- (compensate for or counterbalance; "offset deposits and withdrawals")
=> balance, equilibrate, equilibrize, equilibrise -- (bring into balance or equilibrium; "She has to balance work and her domestic duties"; "balance the two weights")
Sense 2
counteract, countervail, neutralize, counterbalance -- (oppose and mitigate the effects of by contrary actions; "This will counteract the foolish actions of my colleagues")
=> cancel, offset, set off -- (make up for; "His skills offset his opponent's superior strength")