1 (formal) (of people, their actions etc) intending, or intended, to do harm: a malignant remark.
az: hirsli, acıqlı
ru: злой, злобный
2 (medical) (of a tumour/tumor, disease etc) likely to become worse and cause death: She died of a malignant tumour.
az: bəd xassəli
ru: злокачественный