biased, partisan, prejudiced, unequal, unfair, unjust, unrealistic, unreasonablearbitrary, dictatorial, high-handed, imperious, peremptory, willful(or wilful)arrogant, commanding, demanding, dominant, domineering, haughty, imperative, lordly, masterful, overbearing, presumptuousauthoritarian, autocratic(also autocratical), despotic, totalitarian, tyrannical(also tyrannic), tyrannouscapricious, changeable, erratic, inconsistent, mercurial, whimsicalunconscionable, unethical, unprincipled, unscrupulous

balanced, disinterested, dispassionate, equal, equitable, evenhanded, fair, impartial, just, nonpartisan, objectiverational, reasonable, understandingunbiased, unprejudicedethical, honorable, irreproachable, law-abiding, moral, principled, unimpeachable