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
Synonyms: refractory, stubborn
Definition: not responding to treatment
Usage: a stubborn infection; a refractory case of acne; stubborn rust stains
Similar words: intractable
Definition: not tractable; difficult to manage or mold
Usage: an intractable disposition; intractable pain; the most intractable issue of our era; intractable metal