strong-willed Synonyms

assertive single-minded stiff-necked strong-minded stubborn tenacious unbending unshakable wilful willful unyielding dead set pigheaded tough-minded rock-ribbed unhearing self-willed self-assertive resolved balky bullheaded contumacious decisive determined dogged domineering headstrong indomitable obdurate obstinate persevering pertinacious purposeful resolute unmalleable