in a confidently careless and informal way

There was a paintbrush stuck rakishly behind his ear. 一支画笔漫不经心地插在他的耳后。

A small hat trailing peacock feathers sat rakishly on her head. 一顶镶着孔雀毛的小帽子随意地戴在了她的头上。

in an immoral way, used especially in relation to a man who has sex with a lot of women

"I'm not a good person," Stephen tells Molly, whom he has treated rakishly. “我不是一个好人，”斯蒂芬告诉莫莉，他对莫莉态度很是放荡。

How many women have spent an evening being rakishly charmed and then sorely disappointed? 有多少女人曾在某个夜晚被放荡的魅力所吸引，然后又痛心疾首地失望？