malign

(verb) speak unfavorably about. Synonyms: badmouth, traduce, drag through the mud. Example: "She badmouths her husband everywhere."

(adj) evil or harmful in nature or influence. Synonyms: malign (vs. benign). Examples: "Prompted by malign motives." "Believed in witches and malign spirits." "Gave him a malign look." "A malign lesion."

(adj) having or exerting a malignant influence. Synonyms: malefic, malevolent, evil. Examples: "Malevolent stars." "A malefic force."