Definition of "unreturnable" [unreturnable]

• That is not able to be returned (adjective)
• That is not designed to be returned; nonreturnable (adjective)

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• "It's like a giant inappropriate and unreturnable wedding gift."
• "Nadal gets the better of it, somehow, and then thumps down another unreturnable serve."
• "Williams's shot, a bullet forehand to the opposite corner, was unreturnable, but the rules on hindrances in tennis are clear: Any deliberate action, such as a noise, that could distract an opponent forfeits the point even if there was no intent to distract."