Read Edit View history 不成文 bùchéngwén unwritten Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 不成文 · bùchéngwén · unwritten 2026/03/04 不成文 bùchéngwén unwritten unwritten (rule); not in writing 这是我们公司一个不成文的规定。 created sense Mar 4, 2026, 02:25 AM