Synonyms of 'arbitrary'

absolute, aristocratic, arrogant, authoritarian, authoritative, autocratic, autonomous, bossy, capricious, careless, chance, chancy, cranky, crotchety, despotic, dictatorial, discretional, discretionary, dogmatic, domineering, doubtful, elective, erratic, fanciful, fantastic, feudal, flaky, freakish, free, free will, gratuitous, harebrained, heedless, high-handed, iffy, imperative, imperial, imperious, impetuous, inadvertent, inconsiderate, inconsistent, independent, indiscreet, irrational, kinky, kooky, lordly, magisterial, magistral, masterful, moody, notional, oppressive, optional, oracular, overbearing, peremptory, petulant, precipitate, quirky, random, rash, repressive, screwball, self-acting, self-determined, severe, spontaneous, strict, subjective, summary, temperamental, thoughtless, tyrannical, tyrannous, unasked, unbesought, unbidden, uncalled-for, uncertain, uncompromising, unconstrained, undisciplined, unforced, unguarded, uninfluenced, uninvited, unpredictable, unprompted, unreasonable, unreasoning, unreflecting, unrequested, unrestrained, unruly, unsolicited, unsought, unthinking, unthoughtful, vagarious, vagrant, voluntary, volunteer, wanton, wayward, whimsical, wild, willful, zany