Antonyms of adj arbitrary

1 sense of arbitrary

Sense 1
arbitrary (vs. nonarbitrary) -- (based on or subject to individual discretion or preference or sometimes impulse or caprice; "an arbitrary decision"; "the arbitrary rule of a dictator"; "an arbitrary penalty"; "of arbitrary size and shape"; "an arbitrary choice"; "arbitrary division of the group into halves")

nonarbitrary (vs. arbitrary), unarbitrary -- (not subject to individual determination)
        => prescribed -- (set down as a rule or guide)

Similarity of adj arbitrary

1 sense of arbitrary

Sense 1
arbitrary (vs. nonarbitrary) -- (based on or subject to individual discretion or preference or sometimes impulse or caprice; "an arbitrary decision"; "the arbitrary rule of a dictator"; "an arbitrary penalty"; "of arbitrary size and shape"; "an arbitrary choice"; "arbitrary division of the group into halves")
       => absolute -- (not limited by law; "an absolute monarch")
       => capricious, impulsive, whimsical -- (determined by chance or impulse or whim rather than by necessity or reason; "a capricious refusal"; "authoritarian rulers are frequently capricious"; "the victim of whimsical persecutions")
       => discretionary, discretional -- (having or using the ability to act or decide according to your own discretion or judgment; "The commission has discretionary power to award extra funds")