malignant.
Harmful, malevolent, injurious.
Meaning & usage
Harmful, malevolent, injurious.
malignant temper; malignant revenge; malignant infection
Tending to produce death; threatening a fatal issue.
malignant diphtheria
a malignant tumor
Where this word comes from
From Middle French malignant, from Late Latin malignans. See malign.
A deviant; a person who is hostile or destructive to society.
A person who fought for Charles I in the English Civil War.
Where this word comes from
From Middle French malignant, from Late Latin malignans. See malign.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.