Spendthrift is defined as a person who overspends, or who spends money in an irresponsible way.(noun)
An example of a spendthrift is a person who spends hundreds of dollars on purses and shoes she can't afford.
The definition of spendthrift is wasteful or extravagant.(adjective)
An example of spendthrift used as an adjective is a spendthrift teenager.
See spendthrift in Webster's New World College Dictionary
See spendthrift in American Heritage Dictionary 4
Origin: + thrift, accumulated wealth (obsolete).
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