Malign

1. adjective

   having or exerting a malignant influence

   “malevolent stars”

   Similar: malefic, malevolent, evil

2. adjective

   evil or harmful in nature or influence

   “prompted by malign motives”

3. verb

   speak unfavorably about

   “She badmouths her husband everywhere”

   Similar: badmouth, traduce, drag through the mud