Source : Webster's Revised Unabridged Dictionary (1913)

Misty \Mist"y\, a. [Compar. {Mistier}; superl. {Mistiest}.] [AS.
   mistig. See {Mist}. In some senses misty has been confused
   with mystic.]
   1. Accompained with mist; characterized by the presence of
      mist; obscured by, or overspread with, mist; as, misty
      weather; misty mountains; a misty atmosphere.

   2. Obscured as if by mist; dim; obscure; clouded; as, misty
      sight.

            The more I muse therein [theology], The mistier it
            seemeth.                              --Piers
                                                  Plowman.

Source : WordNet®

misty
     adj 1: filled or abounding with fog or mist; "a brumous October
            morning" [syn: {brumous}, {foggy}, {hazy}]
     2: wet with mist; "the misty evening"
     [also: {mistiest}, {mistier}]

mistier
     See {misty}