Pronunciation: (non"pur-fôr'ming), [key]
1. not performing well or properly.
2. Banking.noting or pertaining to a debt on which interest payments have been missed or slow, or for which the interest rate has been voluntarily lowered: the rise in nonperforming loans.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.