The Collaborative International Dictionary of English v.0.48:

Wearish \Wear"ish\, a. [Etymol. uncertain, but perhaps akin to
   weary.]
   [1913 Webster]
   1. Weak; withered; shrunk. [Obs.] "A wearish hand." --Ford.
      [1913 Webster]

            A little, wearish old man, very melancholy by
            nature.                               --Burton.
      [1913 Webster]

   2. Insipid; tasteless; unsavory. [Obs.]
      [1913 Webster]

            Wearish as meat is that is not well tasted.
                                                  --Palsgrave.
      [1913 Webster]