There are several synonyms for the term "go without saying", which generally means something that is understood or expected without needing to be explicitly stated. Some alternatives could include "be obvious", "be self-evident", "be understood", or "be clear". Other possibilities might include "be a given", "be taken for granted", "be universally known", or "be a foregone conclusion". All of these phrases convey the idea that the matter at hand is widely accepted or understood without needing to be explicitly explained. Using synonyms for this term can help to add variety to your writing and avoid repetition.