besmirch

verb besmirch

• defile — To defile something that people think is important or holy means to do something to it or say something about it which is offensive.
• slander — defamation; calumny: rumors full of slander.
• blacken — To blacken something means to make it black or very dark in colour. Something that blackens becomes black or very dark in colour.
• dishonor — lack or loss of honor; disgraceful or dishonest character or conduct.
• smear — to spread or daub (an oily, greasy, viscous, or wet substance) on or over something: to smear butter on bread.