The Collaborative International Dictionary of English v.0.48:

Unpersuaded \Unpersuaded\
   See persuaded.

WordNet (r) 3.0 (2006):

unpersuaded
    adj 1: not converted [syn: unconverted, unpersuaded]

Moby Thesaurus II by Grady Ward, 1.0:

32 Moby Thesaurus words for "unpersuaded":
   agnostic, ambiguous, capricious, chancy, changeable, dicey,
   doubting, equivocal, erratic, fickle, hesitant, hesitating,
   incalculable, indecisive, indemonstrable, irresolute, polysemous,
   skeptical, touch-and-go, unaccountable, uncertain, unconfirmable,
   unconvinced, undivinable, unforeseeable, unpredictable, unprovable,
   unsure, unverifiable, variable, wavering, whimsical