Spendthrift :: Spendthrift (n.) One who spends money profusely or improvidently; a prodigal; one who lavishes or wastes his estate. Also used figuratively.
Thriftiness :: Thriftiness (n.) The quality or state of being thrifty; thrift.
Thriftless :: Thriftless (a.) Without thrift; not prudent or prosperous in money affairs.
Thrifty :: Thrifty (superl.) Given to, or evincing, thrift; characterized by economy and good menegement of property; sparing; frugal..
Thrifty :: Thrifty (superl.) Thriving by industry and frugality; prosperous in the acquisition of worldly goods; increasing in wealth; as, a thrifty farmer or mechanic..
Thrifty :: Thrifty (superl.) Growing rapidly or vigorously; thriving; as, a thrifty plant or colt..
Thrifty :: Thrifty (superl.) Secured by thrift; well husbanded.
Thrifty :: Thrifty (superl.) Well appearing; looking or being in good condition; becoming.