Source : Webster's Revised Unabridged Dictionary (1913)

Unclothed \Un*clothed"\, a.
   1. [Properly p. p. of unclothe.] Divested or stripped of
      clothing. --Byron.

   2. [Pref. un- not + clothed.] Not yet clothed; wanting
      clothes; naked. -- {Un*cloth"ed*ly}, adv. [Obs.] --Bacon.

Source : WordNet®

unclothed
     adj : not wearing clothing [ant: {clothed}]