multitude (n.)youdaoicibaDictYouDict[multitude 词源字典]
early 14c., from Old French multitude (12c.) and directly from Latin multitudinem (nominative multitudo) "a great number, a crowd; the crowd, the common people," from multus "many, much" (see multi-) + suffix -tudo (see -tude). Related: Multitudes.[multitude etymology, multitude origin, 英语词源]