The Collaborative International Dictionary of English v.0.48:

Unfraught \Un*fraught"\, a.
   1. [Pref. un- not + fraught.] Not fraught; not burdened.
      [1913 Webster]

   2. [1st pref. un- + fraught.] Removed, as a burden; unloaded.
      --P. Fletcher.
      [1913 Webster]