Related Clues:

• Malign — rude act (anag)
• Malign notice interrupts attempt to stop war
• Uncle regularly follows jazz? Slander
• Slander a duke during armistice
• Bad-mouth picture put up by Mussolini
• Speak badly of drug, taken regularly in tiny amount
• Speak unfavourably about traffic outside fronts of university colleges
• Malign university college entering deal
• Denigrate, impugn
• Speak badly of – curated (anag.)