Definitions
1.nounA prodigal person, a spendthrift.
2.adjectiveWastefully extravagant."He found himself guilty of prodigal spending during the holidays."
3.adjective(often followed by of or with) Yielding profusely, lavish."How can he be so prodigal with money on such a tight budget?"
4.adjectiveProfuse, lavishly abundant.
5.adjective(by allusion to the Biblical parable of the prodigal son) returning after abandoning a person, group, or ideal, especially for selfish reasons; behaving as a prodigal son.