An Encylopedia Britannica Company

Mr.

Mr. (US) noun
or British Mr /ˈmɪstɚ/
Mr. (US)
noun
or British Mr /ˈmɪstɚ/
Britannica Dictionary definition of MR.
used as a title before the name of a man compare mister; see also messrs.
used as a title when speaking to a man who has an honored position or office
used as part of a title for a man who has won a contest
used to refer to a man who is very successful and famous for a particular activity (such as a sport) or who has a particular quality