ichidan verb, intransitive verb
become worldly; become sophisticated; get used to the ways of the world
Describes a person who has gained experience and poise through exposure to society, often implying a loss of naivety.
都会に出てから、彼はすっかり世慣れた。
After moving to the city, he became completely worldly.
世慣れた態度で交渉
He approached the negotiation with a sophisticated manner.