\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 whet you
      think of Mister Some-one's book, Or Mister Other's
      marriage or decease.                     --Mrs.
                                               Browning.

\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. m['e]tier 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. --Chaucer.
2. Manner; kind; sort. [Obs.] --Spenser.
         But telleth me what mester men ye be. --Chaucer.
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. --Spenser.