molder (v.)youdaoicibaDictYouDict[molder 词源字典]
also moulder, "to crumble away," 1530s, probably frequentative of mold (n.3) "loose earth." Related: Moldered; moldering.[molder etymology, molder origin, 英语词源]
molder (n.)youdaoicibaDictYouDict
also moulder, mid-15c., "one who molds or forms," agent noun from mold (v.). From late 13c. as a surname.