Synonyms: unreformable, unregenerate
Definition: unrepentant and incapable of being reformed
Usage: an unregenerate criminal
Similar words: incorrigible
Definition: impervious to correction by punishment
Synonyms: unregenerate, unregenerated
Definition: not reformed morally or spiritually
Usage: unregenerate human nature; unregenerate conservatism
Similar words: unrepentant, obdurate, obstinate, cussed
Definition: stubbornly persistent in wrongdoing
Similar words: impenitent
Definition: impervious to moral persuasion
Similar words: unconverted, unpersuaded
Definition: not converted
Synonyms: unregenerate, obstinate, stubborn
Definition: tenaciously unwilling or marked by tenacious unwillingness to yield
Similar words: bloody-minded, cantankerous
Definition: stubbornly obstructive and unwilling to cooperate
Usage: unions...have never been as bloody-minded about demarcation as the shipbuilders- Spectator
Similar words: bolshy, stroppy
Definition: obstreperous
Similar words: bullet-headed, bullheaded, pigheaded
Definition: obstinate and stupid
Similar words: unyielding, dogged, dour, tenacious, persistent, pertinacious
Definition: stubbornly unyielding
Usage: dogged persistence; dour determination; the most vocal and pertinacious of all the critics; a mind not gifted to discover truth but tenacious to hold it- T.S.Eliot; men tenacious of opinion
Similar words: contrarious, cross-grained
Definition: difficult to deal with
Similar words: determined
Definition: devoting full strength and concentrated attention to
Usage: made continued and determined efforts to find and destroy enemy headquarters
Similar words: mulish, hardheaded
Definition: unreasonably rigid in the face of argument or entreaty or attack
Similar words: stiff-necked
Definition: haughtily stubborn
Usage: a stiff-necked old Boston brahmin
Similar words: strong-minded, strong-willed
Definition: having a determined will