noun. One who decides; one who or that which determines a cause or contest.

noun. One who decides.

noun. A person, divinity, or authoritative text which decides.

noun. An event or action which decides the outcome of a contested matter.

noun. A Turing machine that halts regardless of its input.

"United have written to the Football Association on behalf of Ferguson after he was charged with improper conduct for praising the referee Howard Webb prior to the title decider against Chelsea."

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