n.性行为放纵者;浪荡子;持自由思想者
adj.放荡的;不务正业的
The transition from libertine to prig was so complete. 一个酒徒色鬼竟然摇身一变就成了道学先生。
I believe John is not a libertine any more. 我相信约翰不再是个浪子了。