prodigal

Concise Oxford English Dictionary © 2008 Oxford University Press:
prodigal/ˈprɒdɪɡl/

▶adjective

• 1 wastefully extravagant.

• 2 lavish.

▶noun a prodigal person.

■ (also prodigal son or daughter) a person who leaves home to lead a prodigal life but returns repentant.

[with allusion to the parable in Luke 15:11–32.]

– derivatives
prodigality noun,
prodigally adverb.

– origin ME: from late L. prodigalis, from L. prodigus ‘lavish’.