different between malignant vs avernian

English

From Middle French malignant, from Late Latin malignans. See malign.

malignant (comparative more malignant, superlative most malignant)

Harmful, malevolent, injurious.
(medicine) Tending to produce death; threatening a fatal issue.
malignant diphtheria
a malignant tumor

malignant (plural malignants)

A deviant; a person who is hostile or destructive to society.
- 1823, The Retrospective Review (volume 7, page 11)
  As devout Stephen was carried to his burial by devout men, so is it just and equal that malignants should carry malignants […]
(historical, derogatory, obsolete) A person who fought for Charles I in the English Civil War.

malignant

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