What is "badmouths"

Usage examples of "badmouths".

I want practical, selfserving men, not blindly loyal men who will lose their common sense the first time someone badmouths a Rhomandi.

I want practical, self-serving men, not blindly loyal men who will lose their common sense the first time someone badmouths a Rhomandi.

Then he raised his arm, and at the end of the arm one finger pointed out of his knotted fist, and in that moment he was like Babe Ruth, old and almost washed up, pointing to the spot where he was going to hit the home run, pointing for all the hecklers and badmouths in Wrigley Field, shutting them up once and for all.

I'd been there when Mario Savio and other badmouths got their start at Sproul Hall in '65.