— bloody-minded
— bolshie
— bolshy
— bullet-headed
— bullheaded
— cantankerous
— contrarious
— cross-grained
— determined
— disobedient
— dogged
— dour
— down-the-line
— hardheaded
— inflexible
— intractable
— mulish
— persistent
— pertinacious
— pigheaded
— set afire
— set apart
— set fire to
— set forth
— set free
— sideboard
— stiff-necked
— stopper
— strong-minded
— strong-willed
— stroppy
— stubbornness
— stupor
— sturdy
— suit of armour
— tenacious
— uncompromising
— unyielding