badmouthing From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsverbTo criticize or malign, especially unfairly or spitefully. Related wordsSynonymstraducemaligndrag through the mudagainstmaligninginsultingdenigratingdisparagingslanderingdisparagedisparagesdefamingdenigratoryderogatingbad temperedinsults References Wiktionary — badmouthing Wikipedia — badmouthing