Source : Webster's Revised Unabridged Dictionary (1913)

Unware \Un*ware"\, a. [AS. unw[ae]r unwary. See {Un-} not, and
   {Wary}.]
   1. Unaware; not foreseeing; being off one's guard. [Obs.]
      --Chaucer. Fairfax.

   2. Happening unexpectedly; unforeseen. [Obs.]

            The unware woe of harm that cometh behind.
                                                  --Chaucer.
      -- {Un*ware"ly}, adv. [Obs.] -- {Un*ware"ness}, n. [Obs.]