(“ad nauseam” is a ‘latin’ term for argument or other discussion that has continued ‘to [the point of] nausea’)
(for example, the sentence “this topic has been discussed ad nauseam” signifies that the topic in question has been discussed extensively, and that those involved in the discussion have grown tired of it)
(the fallacy is also called argumentum ad infinitum (‘to infinity’), and “argument from repetition”)