noun · a man who is excessively interested in sex or behaves like a skirt-chaser

那个经常在大街上调戏妇女的男人是个典型的登徒子。

proper name, noun · a famous historical and literary character from the Warring States period, often portrayed as the archetype of a lecher

宋玉在《登徒子好色赋》中巧妙地反击了登徒子的指责。