識趣 的英文怎麼說?

[1] humor somebody[2] be mature
  be sophisticated[3] be street smart[4] know how to behave in a delicate situation[5] know how to handle a delicate situation

humor somebody 指迎合某人，mature 跟 sophisticated 指成熟，後者更有「識趣」的意思，street smart 指一個人很精明，know how to handle a delicate situation 是白話的翻譯。