The definition of an arbiter is someone who is either qualified to judge or chosen to decide something.(noun)
Jennifer Lopez is an example of an arbiter for the television show American Idol.
See arbiter in Webster's New World College Dictionary
Origin: L, orig., one who goes to a place, a witness, judge < ad-, to + baetere, to come, go
See arbiter in American Heritage Dictionary 4
Origin: Middle English arbitre
Origin: , from Old French
Origin: , from Latin arbiter
Origin: , of Phoenician origin; see עrb in Semitic roots.
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