arbitrary: Meaning and Definition of

ar•bi•trar•y

1. subject to individual will or judgment without restriction; contingent solely upon one's discretion: an arbitrary decision.
2. decided by a judge or arbiter rather than by a law or statute.
3. having unlimited power; uncontrolled or unrestricted by law; despotic; tyrannical: an arbitrary government.
4. capricious; unreasonable; unsupported: an arbitrary demand for payment.
5. undetermined; not assigned a specific value: an arbitrary constant.

1. Print. (in Britain) peculiar (def. 9).