afield (adv.)youdaoicibaDictYouDict[afield 词源字典]
1590s, contraction of Middle English in felde, from Old English on felda "in the field" (especially of battle), from a- "on" (see a- (1)) + field (n.). Meaning "away from home" is attested by early 15c.[afield etymology, afield origin, 英语词源]