• Based on individual discretion or judgment; not based on any objective distinction, perhaps even made at random.
  • Determined by impulse rather than reason; heavy-handed.
  • Any, out of all that are possible.
  • Determined by independent arbiter.
  • Not representative or symbolic; not iconic.


  • Anything arbitrary, such as an arithmetical value or a fee.


  • From Middle English arbitrarie, Latin arbitrārius, from arbiter.

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