unregenerate

definition: unrepentant and incapable of being reformed
example: an unregenerate criminal
speech part: adjective
synonyms: unreformable
definition: not reformed morally or spiritually
example: unregenerate human nature
speech part: adjective
synonyms: unregenerated
definition: tenaciously unwilling or marked by tenacious unwillingness to yield
example:
speech part: adjective
synonyms: obstinate stubborn

How unregenerate is being used?