Synonyms of wrong-headed

2 Syllables
stubborn, formal, downright
3 Syllables
bigoted, fascistic, emphatic, stiff-necked, confident, imperious, bullheaded, pigheaded, tenacious, dogmatic, arrogant, cocksure, despotic
4 Syllables
one-sided, tyrannical, domineering, obdurate, assertive, definite, dictative, doctrinaire, prejudiced, overbearing, magisterial, intolerant, peremptory, narrow-minded, obstinate, fanatical, arbitrary, determined
5 Syllables
categorical, unequivocal, egotistical