·adj Depending on will or discretion; not governed by any fixed rules; as, an arbitrary decision; an arbitrary punishment.
II. Arbitrary ·adj Despotic; absolute in power; bound by no law; harsh and unforbearing; tyrannical; as, an arbitrary prince or government.
III. Arbitrary ·adj Exercised according to one's own will or caprice, and therefore conveying a notion of a tendency to abuse the possession of power.