COMMON You say it goes without saying to mean that something is obviously true. It goes without saying that if someone has lung problems they should not smoke.

Should not go without mention Meaning?

Re: Doesn't go without saying..

That means you are expected to do something without anybody mentioning it. For example: Tomorrow is your father's birthday.

Is it go without saying rude?

Do they sound a bit rude to use to old people? That depends on what your whole sentence is and what you're trying to express. Neither is innately rude, but could be rude for example if you said "It goes without saying that you can't do that" after the person already did it. ...