misteryoudaoicibaDictYouDict[mister 词源字典]
mister: see master
[mister etymology, mister origin, 英语词源]
misteryoudaoicibaDictYouDict
as a title of courtesy before a man's Christian name, mid-15c., unaccented variant of master. As a form of address, without a name and with a tinge of rudeness, from 1760.