Definition of "nack" []

• To acknowledge negatively; to send a NAK signal to. (verb)

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• "I simply didn't hear that last part, nor did I see the "nack" following "Sara" in their emails."
• "How about common sense, a nack for seeking truth& justice, intelligence, the ability to learn from OTHERS life experiences, honesty ....."
• "I've got a nack for WWII films myself, so you combine Tarantino and WWII, and I'm instantly excited."