I can stop a sale, protect a boundary, end a request, or save a life. I am only two letters. What word am I? - Answer & Hint

I can stop a sale, protect a boundary, end a request, or save a life. I am only two letters. What word am I?

Type:WordplayLanguage

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Hint: It is the shortest complete refusal.

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The word no can refuse a sale, protect a personal boundary, end a request, or stop a dangerous action.

#hard-riddles-for-adults Type: WordplayTopic: Language#adults#wordplay#language

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