to talk in an annoying way or complain ("on" can be repeated for emphasis) "They yammered on and on and on."
yammer on about
to talk in an annoying way about something or complain about ("on" can be repeated for emphasis) "He just yammered on and on about how horrible the waiter was."
An yamm idiom dictionary is a great resource for writers, students, and anyone looking to expand their vocabulary. It contains a list of words with similar meanings with yamm, allowing users to choose the best word for their specific context.
Dictionary of similar words, Different wording, Synonyms, Idioms for Idiom, Proverb yamm