Basic Guidelines For English Spellings
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A presiding authority at an agon or public celebration of games; a judge or overseer of proceedings. Also more generally: a master of revels.
Mid 17th century; earliest use found in Thomas Blount (1618–1679), antiquary and lexicographer. From ancient Greek ἀγωνάρχης judge of a contest or games from ἀγών + -αρχης.