prodigal

Rashly or wastefully extravagant.

Giving or given in abundance; lavish or profuse: synonym: profuse.

One who is given to wasteful luxury or extravagance.

In civil law. a person of full age for whom, by judicial authority, a curator is appointed, by reason of his inability to attend to his obligations and estate.

Given to extravagant expenditure; expending money or other property without necessity; profuse; lavish; wasteful: said of persons.