proffer (v.)youdaoicibaDictYouDict[proffer 词源字典]
"to offer," late 13c., from Anglo-French profrier (mid-13c.), Old French poroffrir (11c.), from por- "forth" (from Latin pro-; see pro-) + offrir "to offer," from Latin offerre (see offer (v.)). Related: Proffered; proffering. As a noun from late 14c.[proffer etymology, proffer origin, 英语词源]