1 capricious, varying, erratic, uncertain, inconsistent, doubtful, unpredictable, whimsical, irrational, chance, random, inconsistent, subjective, unreasoned, irrational, Colloq chancy, iffy:
The choices are entirely arbitrary, totally at the whim of the council and not based on research or knowledge.
2 absolute, tyrannical, despotic, authoritarian, magisterial, summary, peremptory, autocratic, dogmatic, imperious, uncompromising, inconsiderate, high-handed, dictatorial, Rare thetic(al):
The conduct of the archbishop appears to have been arbitrary and harsh.
completely, entirely, purely, quite, wholly | fairly, rather, somewhat, to some extent
The decision is to some extent arbitrary.
| essentially | apparently
Random quote: Do not be embarrassed by your mistakes. Nothing can teach us better than our understanding of them. This is one of the best ways of self-education.: Thomas CarlyleLatest queries: somewhat, yacht, single figures, undergo, analysed, framework, licence, component, water lily, conform, scholar, abstract, pertaining, sustain, persistence, explicit, plunged, labour, discussion, arbitrary,