The phrasal verb "bang on about" is predominantly used in informal speech to describe someone talking at length and often repetitively about a particular topic, typically to the point of boredom or annoyance for the listener. It is most commonly employed in British English, where it conveys a sense of irritation towards someone's persistent focus on a subject. You might hear it used in casual conversations, opinion pieces, or informal discussions, usually to criticize or express impatience with someone who is tediously fixated on an issue. Its usage is rarely seen in formal writing or speech, as it carries a colloquial tone and might be considered too informal for such settings. The expression emphasizes the relentless and often unwelcome nature of the discourse being described.
B2
UpperIntermediate
1. To talk at length or continually about a subject in a way that can be annoying or boring to others.
He keeps banging on about his new car all the time and it's getting quite tiresome.
During dinner, she banged on about the benefits of recycling when everyone wanted to change the topic.
I wish you would stop banging on about your promotion; we've heard enough about it already.