Morpheme
Arbit(e)r [Arbiter, Arbitr]
Type
free base
Denotation
witness, spectator, judge, overseer
Etymology
Middle English arbiter, arbytour, arbitre; Old French arbitre; Latin arbiter
Evidence
arbiter, arbitered, arbitering, arbiters, arbitrable, arbitrage, arbitral, arbitrament, arbitrary, arbitrate, arbitrated, arbitrates, arbitrating, arbitration, arbitrator, arbitrement, arbitress, superarbiter
Notes
arbitrement is a less common variant of arbitrament