lib ‧ er ‧ tine /ˈlɪbətiːn $ -ər-/ BrE AmE noun [countable] literary
[ Date: 1300-1400 ; Language: Latin ; Origin: libertinus 'free person' , from liber ; ⇨ ↑ liberty ]
someone who leads an immoral life and always looks for pleasure, especially sexual pleasure
—libertine adjective