If talking about politics at your dinner table is forbidden, political discussion is an example of something that is verboten.
Origin of verbotenGerman
Origin of verbotenGerman, past participle of verbieten, to forbid, from Middle High German, from Old High German farbiotan; see bheudh- in Indo-European roots.
- forbidden, prohibited
A loanword with connotations of state authoritarianism, derived from a perception of the German Empire under Wilhelm II or Nazi Germany. Much stronger than merely "forbidden". Contemporary usage may be jocular.
From German verboten (“forbidden”).