Source : Webster's Revised Unabridged Dictionary (1913)

Unready \Un*read"y\, v. t. [1st pref. un- + ready.]
   To undress. [Obs.] --Sir P. Sidney.

Unready \Un*read"y\, a.
   1. Not ready or prepared; not prompt; slow; awkward; clumsy.
      --Dryden.

            Nor need the unready virgin strike her breast.
                                                  --Keble.

   2. Not dressed; undressed. [Obs.]

Source : WordNet®

unready
     adj : not prepared or in a state of readiness; slow to understand
           or respond; "she cursed her unready tongue" [ant: {ready}]