unwritten
🇺🇸
/ˌʌnˈrɪtn/
🇬🇧
/ˌʌnˈrɪtn/
adjective
R
Known and followed by people, but not officially made into a rule or law.
There's an unwritten rule in our office that you should never eat someone else's lunch from the fridge.
我们办公室有一条不成文的规定，那就是你永远不应该从冰箱里吃别人的午餐。
R
Not yet put into words or recorded in writing.
She had a great idea for a story, but it was still unwritten.
她有一个很好的故事想法，但还没有写出来。
translation
不成文的, 未成文的