end of story used to emphasize that there is nothing more to add on the subject just mentioned. informal

☞ The phrase is sometimes abbreviated to simply end of.

2012The Age (Melbourne) The West Australian Commissioner for Corporate Affairs had asked whether it was a trade union, and had been told it wasn't a trade union. Which it wasn't. End of story.

2016Chris LangDark Heart It was Kashell, on his own. Personal revenge. End of.