Comparative form of thrifty: more thrifty (adjective)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "thriftier" in a sentence
"I figured it would be thriftier and more delicious than anything they might have at the concert -- if they sold food there at all."
"Could it be the royal style icon is thriftier than we thought?"
"Despite the so-called "no bailout clause," which was meant to prevent profligate eurozone countries free-riding on their thriftier cousins, traders nonetheless assumed that Italian or Greek debt was all but equivalent to rock-solid German "Bunds"."