Malignant

//məˈlɪɡnənt// adj, noun

adj, noun ·Common ·High school level

Definitions

Noun
  1. 1
    A deviant; a person who is hostile or destructive to society.

    "As devout Stephen was carried to his burial by devout men, so is it just and equal that malignants should carry malignants […]"

  2. 2
    A person who fought for Charles I in the English Civil War. derogatory, historical, obsolete
Adjective
  1. 1
    Harmful, malevolent, injurious.

    "malignant temper; malignant revenge; malignant infection"

  2. 2
    Tending to produce death; threatening a fatal issue.

    "malignant diphtheria"

Adjective
  1. 1
    dangerous to health; characterized by progressive and uncontrolled growth (especially of a tumor) wordnet

Synonyms

All synonyms
cancerousabandonedacridallergicanemicantagonistic

Example

More examples

"Get fuller, sexier, more malignant lips today!"

Etymology

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

Related phrases

bovine malignant catarrhal fevermalignant catarrhal fevermalignant edemaneuroleptic malignant syndromenon-malignant

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.