To speak of in a slighting or disrespectful way.
To cause to be blurry or spread in unwanted places:
To judge disapprovingly; find fault (with); censure
To blur or smear, as in printing
To behave arrogantly.
To express strong disapproval of
Find another word for bad-mouth. In this page you can discover 7 synonyms, antonyms, idiomatic expressions, and related words for bad-mouth, like: disparage, malign, smear, criticize, slur, insult and censure.