unregenerate
UK: ˌʌnrɪˈdʒenərət | US: ˌʌnrɪˈdʒenərɪt
adj. stubbornly resistant to moral or spiritual change
adj. not reformed or showing remorse
adj. (theology) not spiritually reborn
The word "unregenerate" combines the prefix "un-" (Old English "un-," meaning "not") with "regenerate" (Latin "regeneratus," from "re-" [again] + "generare" [to produce]). Originally used in theological contexts to describe someone not spiritually reborn, it later broadened to mean stubbornly resistant to change. The morphemes preserve their original spelling while clearly conveying opposition ("un-") to renewal ("regenerate").
The unregenerate thief showed no remorse for his crimes.
Despite years of counseling, he remained unregenerate in his habits.
Her unregenerate attitude made reconciliation impossible.
The preacher spoke of the dangers of an unregenerate heart.
Even after prison, his unregenerate behavior continued.