1. Reckless extravagance.
2. Shameless dissoluteness.
3. Great abundance.
Profligacy comes from the Latin word prōflīgātus which meant “broken down in character or degraded.”
The extravagance and general profligacy which he scrupled not to lay at Mr. Wickham’s charge, exceedingly shocked her; the more so, as she could bring no proof of its injustice.
— Jane Austen, Pride and Prejudice