What is the phrase "nothing to say"?

Does the questioner want to ask "What does it mean to have nothing to say"? There is nothing to say in reply. Nothing to say is a colloquial expression, which means that there is absolutely no need to say anything more about something. The evidence or facts are already very obvious, and there is no reason to question or refute it. This expression is used to emphasize the correctness of a certain point of view or conclusion, and can also be used to express one's admiration or admiration for a person or thing.