海千山千

うみせんやません

cunning and experienced in the ways of the world; crafty and worldly-wise; sly old (fox)

adj-no noun

Example sentences

あいつも海千山千（うみせんやません）だから、相手（あいて）と取引（とりひき）させてもかなり手（て）づよいぞ。

With all of his tricks he has mastered, he will be able to deal with any formidable client.