malign in WordNet English dictionary

1. speak unfavorably about
   "She badmouths her husband everywhere"
   badmouth  malign  traduce  drag through the mud 
   

1. having or exerting a malignant influence
   "malevolent stars"; "a malefic force"
   malefic  malevolent  malign  evil 
   
2. evil or harmful in nature or influence
   "prompted by malign motives"; "believed in witches and malign spirits"; "gave him a malign look"; "a malign lesion"
   malign