From Longman Dictionary of Contemporary Englishlicentiousli‧cen‧tious /laɪˈsenʃəs/ adjective formal BAD PERSONbehaving in a sexually immoral or uncontrolled way —licentiously adverb —licentiousness noun [uncountable]
Examples from the Corpus
licentious• The lips were more sensuous than the original, almost licentious.• licentious behavior• As for the notion of canvassing his licentious friends, it was out of the question.• Though I myself led a licentious life, the licentiousness of the women nevertheless shocked me.Origin licentious (1400-1500) Latin licentiosus, from licentia; LICENSE1 