世せ間けんずれ

noun, noun or participle which takes 'suru', intransitive verb

worldly wise; sophisticated; street smart

Describes someone who has become shrewd, practical, or slightly cynical through real-world experience, often implying a loss of innocence. Can be used positively or with a hint of criticism.

• 彼かれは若わかいのに世せ間けんずれしていて、交こう渉しょうがうまい。

  He is young but worldly wise and good at negotiating.

• 都と会かいに出でてすっかり世せ間けんずれした。

  After moving to the city, I became completely street smart.