A failure to perform a task, especially a task that one was legally bound to do.(noun)
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Use "nonperformance" in a sentence
"Of course, I could have upped the payoff for "nonperformance" on my part to, say, $1,000."
"I'd gotten Mayer's list and a notice that my scholarship had been canceled due to "nonperformance," and I was working on Mayer's list just to stay in the dorm."
"A few days ago, OC terminated SMAM contract on grounds of "nonperformance", a charge the company refuted."