adjective, thrift·i·er, thrift·i·est.
- practicing thrift or economical management; frugal: a thrifty shopper.
- thriving, prosperous, or successful.
- thriving physically; growing vigorously.
adjective thriftier or thriftiest
- showing thrift; economical or frugal
- rare thriving or prospering
adj.late 14c., from thrift + -y (2). Related: Thriftily; thriftiness.