Mis"ter (?), n. [See Master, and cf. Mistress.] A title of courtesy prefixed to the name of a man or youth. It is usually written in the abbreviated form Mr.

To call your name, inquire your where,
Or what you think of Mister Some-one's book,
Or Mister Other's marriage or decease.

Mis"ter, v. t. To address or mention by the title Mr.; as, he mistered me in a formal way. [Colloq.]

Mis"ter, n. [OF. mistier trade, office, ministry, need, F. métier trade, fr. L. ministerium service, office, ministry. See Ministry, Mystery trade.] [Written also mester.] 1. A trade, art, or occupation. [Obs.]

In youth he learned had a good mester.

2. Manner; kind; sort. [Obs.] Spenser.

But telleth me what mester men ye be.

3. Need; necessity. [Obs.] Rom. of R.

Mis"ter, v. i. To be needful or of use. [Obs.]

As for my name, it mistereth not to tell.

• Title of respect conferred on a man, with or without a surname added.
       
• adding surname usually changes mister to abbreviated form, Mr. (capitalized)
       
• You may sit here, mister.
       
• You may sit here, Mister Jones.
  
• Official title of a military man, usually anyone below rank of captain.
  
• Official title of politician; Mr. President.
  
• A warrant officer or cadet in the United States Military Academy at West Point.