asideyoudaoicibaDictYouDict[aside 词源字典]
aside: [14] Aside is a reduced form of the Middle English phrase on syde, literally ‘on side’, meaning ‘to one side’.
=> side[aside etymology, aside origin, 英语词源]
aside (adv.)youdaoicibaDictYouDict
c. 1300, "off to one side;" mid-14c., "to or from the side;" late 14c., "away or apart from others, out of the way," from a- (1) + side (n.). Noun sense of "words spoken so as to be (supposed) inaudible" is from 1727. Middle English had asidely "on the side, indirectly" (early 15c.) and asideward "sideways, horizontal" (late 14c.).