unwritten
UK [ʌn'rɪt.ən] US [-'rɪtˌ-] adjective
■describes something that does not exist in a written or printed form 非书面的；口头的；不成文的•an unwritten constitution不成文宪法 ■describes a rule or law which does not exist officially but which people generally accept and obey （法规）不成文的•There's an unwritten rule that you don't wear jeans to work.上班不穿牛仔裤是条不成文的规定。 |