arbitr-, arbit-

(Latin: consider, judge; spectator, listener, witness; originally, "decided by one's own discretion or judgment")

ad arbitrium
At will; at pleasure.

As one pleases or anything done of one's own will.

arbiter
arbitrable (adjective)
arbitrage
arbitral
arbitrament
arbitrarily
arbitrary
1. To be decided by one's liking; dependent upon one's will or pleasure; at the discretion or option of any someone.
2. Unrestrained in the exercise of will; of uncontrolled power or authority, absolute; hence, despotic, tyrannical.
arbitrate
arbitration

"Binding arbitration" means that two sides have agreed to, or are forced to, accept the arbitrator's decision.

arbitrator

To arbitrate means to hear both sides of a dispute and then to make a decision; while an arbitrator acts like a judge and determines which side is right.