不行

不行 (bù xíng) means 'not allowed' or 'not acceptable.' It is used to indicate that something cannot be done or is not permitted, often in a negative response to a request or suggestion.

The character 不 (bù) means 'not,' and 行 (xíng) means 'to go' or 'to do.' Together, they form a phrase that literally translates to 'not go' or 'not do,' which has evolved to mean 'not allowed' or 'not acceptable.'

不行 is commonly used in daily conversations to refuse requests, express disapproval, or state limitations. It can also be used humorously or casually depending on the context. In formal settings, it is often used to indicate that something is against rules or regulations.