arbitrary

adjective (a)

1. based on or subject to individual discretion or preference or sometimes impulse or caprice (adj.all)

   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

   Antonim: nonarbitrary, unarbitrary

   Sumber: wordnet30

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

   Sumber: webster1913