utterly and shamelessly immoral or dissipated; thoroughly dissolute.
2.
recklessly prodigal or extravagant.
–noun
3.
a profligate person.
Origin: 1525–35; < L prōflīgātus broken down in character, degraded, orig. ptp. of prōflīgāre to shatter, debase, equiv. to prō-pro-1+ -flīgāre, deriv. of flīgere to strike; see inflict, -ate1
[Latin prōflīgātus, past participle of prōflīgāre, to ruin, cast down : prō-, forward; see pro-1 + -flīgāre, intensive of flīgere, to strike down.] prof'li·ga·cy (-gə-sē) n., prof'li·gate·ly adv.