avow (v.)youdaoicibaDictYouDict[avow 词源字典]
early 13c., from Anglo-French avouer, Old French avoer "acknowledge, accept, recognize," especially as a protector (Modern French avouer), from Latin advocare (see advocate). A synonym of avouch (q.v.), which tends to contain the more technical, legal aspect of the word. Related: Avowed; avowing.[avow etymology, avow origin, 英语词源]