AdelaideyoudaoicibaDictYouDict[Adelaide 词源字典]
fem. proper name, from French Adélaide, from a Germanic source similar to Old High German Adalhaid, from adal "noble family" (see atheling) + German heit "state, rank," related to Old English -had "person, degree, state, nature" (see -hood). The first element affixed to French fem. ending -ine gave Adeline.[Adelaide etymology, Adelaide origin, 英语词源]