countervail

countervail is defined in Webster's Unabridged Dictionary (1913) with 2 senses. The full text of each entry is reproduced verbatim below.

Definitions

1.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. Upon balancing the account, the profit at last will hardly countervail the inconveniences that go allong with it. L'Estrange.
2.Power or value sufficient to obviate any effect; equal weight, strength, or value; equivalent; compensation; requital. [Obs.] Surely, the present pleasure of a sinful act is a poor countervail for the bitterness of the review. South.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

Definitions: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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