The Collaborative International Dictionary of English v.0.48:
Thriftiness \Thrift"i*ness\, n. The quality or state of being thrifty; thrift. [1913 Webster]WordNet (r) 3.0 (2006):
thriftiness n 1: frugality in the expenditure of money or resources; "the Scots are famous for their economy" [syn: economy, thriftiness]