List of arbitrary synonyms and arbitrary related words.
absolute, absolutist, absolutistic, aristocratic, arrogant, autarchic, authoritarian, authoritative, autocratic, autonomous, bossy, capricious, careless, chance, chancy, cranky, crotchety, despotic, dictatorial, discretional, discretionary, dogmatic, domineering, doubtful, elective, erratic, fanciful, fantasied, fantastic, feudal, flaky, freakish, free, free will, gratuitous, grinding, harebrained, heedless, high-handed, humorsome, iffy, imperative, imperial, imperious, impetuous, inadvertent, inconsiderate, inconsistent, independent, indiscreet, irrational, kinky, kooky, lordly, maggoty, magisterial, magistral, masterful, monocratic, moody, motiveless, nonmandatory, notional, offered, oppressive, optional, oracular, overbearing, overruling, peremptory, petulant, precipitate, proffered, quirky, random, rash, reasonless, repressive, screwball, self-acting, self-active, self-determined, self-determining, severe, spontaneous, strict, subjective, summary, suppressive, temperamental, thoughtless, tyrannical, tyrannous, unasked, unbesought, unbidden, uncalculating, uncalled-for, uncertain, uncoerced, uncompelled, uncompromising, unconstrained, undisciplined, unforced, unguarded, uninfluenced, uninvited, unpredictable, unpressured, unprompted, unreasonable, unreasoning, unreflecting, unrequested, unrequired, unrestrained, unruly, unsolicited, unsought, unthinking, unthoughtful, vagarious, vagrant, varying, voluntary, volunteer, wanton, wayward, whimsical, wild, willful, zany