thrift·y 
(thrĭftē)
(thrĭftē)adj. thrift·i·er, thrift·i·est
1. Practicing or marked by the practice of thrift; wisely economical. See Synonyms at sparing.
2. Archaic
a. Thriving; prosperous.
b. Growing vigorously; thriving, as a plant.
thrifti·ly adv.
thrifti·ness n.