- countervail (v.)
[countervail 词源字典]
- late 14c., "to be worth as much as," also "to prevail against," from Anglo-French countrevaloir, Old French contrevaloir "to be effective against, be comparable to," from Latin phrase contra valere "to be worth against" (see contra- and valiant). Related: Countervailing.[countervail etymology, countervail origin, 英语词源]