nonpurchase adjective 1noun 1forms 1 adjective1 •Not involving a purchaseThe avoidance of a nonpossessory, nonpurchase money security interest, on the other hand, is limited to those liens on types of property specified. — 2003 noun1 •A failure to purchase somethingNotice of nonpurchase could be given at any time between July 6, 1915, and May 3, 1916. — 1918 formsnonpurchases