Definitions for "malign"
Having an evil disposition toward others; harboring violent enmity; malevolent; malicious; spiteful; -- opposed to benign.
To speak great evil of; to traduce; to defame; to slander; to vilify; to asperse.
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"
Unfavorable; unpropitious; pernicious; tending to injure; as, a malign aspect of planets.
To treat with malice; to show hatred toward; to abuse; to wrong; to injure.
To entertain malice.
Keywords:  ulcer
Malignant; as, a malign ulcer.
Keywords:  virulent, dangerous, health
Virulent/dangerous to health.