Synonyms of bullheaded

1 Syllable
stern, mule
2 Syllables
willful, stubborn, seton, headstrong, mulish, sterner, rigid, hardshell, sternest, tough-nut, dogged
3 Syllables
hardline, uncompliant, unhearing, wrong-headed, hard-nosed, strong-minded, hardheaded, pigheaded, dogmatic, unpliable, self-willed
4 Syllables
doctrinaire, obstinate, unbendable
5 Syllables
opinionated, unpermissive
6 Syllables
perseverative