Depending on will or discretion; not governed by any fixed rules; as, an arbitrary decision; an arbitrary punishment.

Exercised according to one's own will or caprice, and therefore conveying a notion of a tendency to abuse the possession of power.

In an unreasonable manner, as fixed or done capriciously or at pleasure, without adequate determining principle.

Depending on individual discretion and not fixed by law; existing or coming about seemingly at random or by chance or as a whimsical and unreasonable act of will.