arbitrary

Synonyms: approximate capricious discretionary erratic fanciful frivolous inconsistent injudicious irrational irresponsible offhand optional random subjective supercilious superficial unaccountable unreasonable unscientific wayward willful

Antonyms: circumspect rational reasonable reasoned supported

Synonyms: absolute autocratic bossy despotic dogmatic domineering downright flat out high-handed imperious magisterial monocratic no ifs ands or buts no joke overbearing peremptory straight out summary tyrannical tyrannous

Antonyms: democratic