The Collaborative International Dictionary of English v.0.48:

Unversed \Unversed\
   See versed.

WordNet (r) 3.0 (2006):

unversed
    adj 1: not having had extensive practice [syn: unpracticed,
           unpractised, unversed]

Moby Thesaurus II by Grady Ward, 1.0:

57 Moby Thesaurus words for "unversed":
   a novice at, a stranger to, awkward, blankminded, callow, dumb,
   empty, empty-headed, fresh, gauche, green, green as grass, groping,
   ignorant, immature, inane, inexperienced, innocent, know-nothing,
   naive, nescient, new to, raw, simple, strange to, tentative,
   unaccustomed to, unacquainted, unacquainted with, unapprized,
   uncomprehending, unconversant, unconversant with, undeveloped,
   unenlightened, unexperienced, unfamiliar, unfamiliar with,
   unfledged, unilluminated, uninformed, uninitiated, uninitiated in,
   unintelligent, unknowing, unmatured, unposted, unpracticed,
   unpracticed in, unripe, unseasoned, unskilled in, unsure, untried,
   unused to, unversed in, vacuous