- vigorous (adj.)
[vigorous 词源字典]
- c. 1300 (early 13c. as a surname), from Anglo-French vigrus, Old French vigoros "strong, robust, powerful" (12c., Modern French vigoreux), from Medieval Latin vigorosus, from Latin vigere "be lively, flourish, thrive" (see vigor). Related: Vigorously.[vigorous etymology, vigorous origin, 英语词源]