1. [n]  a recklessly extravagant consumer
2. [adj]  very generous; "distributed gifts with a lavish hand"; "the critics were lavish in their praise"; "a munificent gift"; "his father gave him a half-dollar and his mother a quarter and he thought them munificent"; "prodigal praise"; "unsparing generosity"; "his unstinted devotion"; "called for unstinting aid to Britain"
3. [adj]  marked by rash extravagance; "led a prodigal life"
4. [adj]  recklessly wasteful; "prodigal in their expenditures"

Prodigal
Prodigal

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1. \Prod"i*gal\, a. [L. prodigus, from prodigere to drive
   forth, to squander away; pro forward, forth + agere to drive;
   cf. F. prodigue. See {Agent}. ]
   Given to extravagant expenditure; expending money or other
   things without necessity; recklessly or viciously profuse;
   lavish; wasteful; not frugal or economical; as, a prodigal
   man; the prodigal son; prodigal giving; prodigal expenses.
         In fighting fields [patriots] were prodigal of blood.
                                                  --Dryden.
   Syn: Profuse; lavish; extravagant; squandering; wasteful. See
        {Profuse}.
   

2. \Prod"i*gal\, n.
   One who expends money extravagantly, viciously, or without
   necessity; one that is profuse or lavish in any expenditure;
   a waster; a spendthrift. ``Noble prodigals of life.''
   --Trench.