Source : Webster's Revised Unabridged Dictionary (1913)

Unregenerate \Un`re*gen"er*ate\, Unregenerated
\Un`re*gen"er*a`ted\, a.
   Not regenerated; not renewed in heart; remaining or being at
   enmity with God.

Source : WordNet®

unregenerate
     adj 1: not regenerate or reformed; "unregenerate human nature";
            "unregenerate conservatism" [syn: {unregenerated}]
            [ant: {regenerate}]
     2: hopelessly bad; "an unregenerate criminal" [syn: {depraved},
         {unreformable}]
     3: persisting in a reactionary stand [syn: {obstinate}, {stubborn}]