0 present participle of bad-mouth
1 to criticize someone or something in a very unpleasant manner:
Stop bad-mouthing him all the time.
Badmouthing the theory is undoubtedly one of the safest ways to make small talk in bioethical meetings.
Consistently throughout the book, people are badmouthing her as she passes them on the street.
Both of them attempt to prove themselves in the industry while badmouthing the other's business to clients.
Teachers at the school have learned to ignore him or risk being fired by the principal for badmouthing a student.
The video also showed her badmouthing her sorority sisters, and her past dorky self.
Take away their incentive with badmouthing success and you take away the wealth that helps us take care of the needy.