Source : Webster's Revised Unabridged Dictionary (1913)

Unhallowed \Un*hal"lowed\, a. [Pref. un- not + hallowed.]
   Not consecrated; hence, profane; unholy; impious; wicked.

         In the cause of truth, no unhallowed violence . . . is
         either necessary or admissible.          --E. D.
                                                  Griffin.

Source : WordNet®

unhallowed
     adj : not hallowed or consecrated [syn: {unholy}] [ant: {holy}]