Source : Webster's Revised Unabridged Dictionary (1913)

Untrammeled \Un*tram"meled\, a.
   Not hampered or impeded; free. [Written also {untrammelled}.]

Source : WordNet®

untrammeled
     adj : not confined or limited; "the gift of a fresh eye and an
           untrammeled curiosity"- Russell Lord; "the untrammeled
           rush that the snows had shown in the first spring sun"-
           Farley Mowat [syn: {untrammelled}]