U1N1T1H4R1I1F4T1Y4
18 points
UNTHRIFTY is validvalid
not thrifty [adj UNTHRIFTIER, UNTHRIFTIEST]
not thrifty [adj UNTHRIFTIER, UNTHRIFTIEST, UNTHRIFTILY]
not thrifty [adj UNTHRIFTIER, UNTHRIFTIEST]
not thrifty [adj UNTHRIFTIER, UNTHRIFTIEST, UNTHRIFTILY]