Mr British English ; Mr. American English
used before a man's family name to be polite when you are speaking to him, writing to him, or talking about him:
Mr Smith is the headteacher.
Mr. John Smith
Mr and Mrs Smith
used when speaking to a man in an official position: ➔ madam (3)
a man who would be the perfect husband for a particular woman:
She's finally found Mr. Right.
the leader or most important person in a group, especially a criminal group
someone who is honest and always obeys the law
used humorously to say that someone has a particular quality or behaves in a particular way:
I don't think we need any comments from Mr Sarcasm here.