mister
noun /ˈmɪstə(r)/
/ˈmɪstər/
- Misterthe full form, not often used in writing, of the abbreviation Mr
- (informal) used, especially by children, to address a man whose name they do not know
- Please, mister, can we have our ball back?
Word Originmid 16th cent.: weakened form of master in unstressed use before a name.