malignant
[adjective]
Synonyms:
- harmful, destructive, hostile, hurtful, malevolent, malign, pernicious, spiteful
- uncontrollable, cancerous, dangerous, deadly, fatal, irremediable

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Antonyms: benignant
Contrasted words: altruistic, benevolent, charitable, humane
Related Words: devilish, diabolical, fiendish

[TahlilGaran] English Synonym Dictionary ▲

ma‧lig‧nant /məˈlɪɡnənt/ adjective
[Date: 1500-1600; Language: Late Latin; Origin: present participle of malignari; ⇒ malign¹]

1. medical a malignant disease is one such as cancer, which can develop in an uncontrolled way and is likely to cause someone’s death Antonym : benign:
She developed a malignant tumour in her breast.

2. formal showing that you hate someone:
a malignant look

[TahlilGaran] Dictionary of Contemporary English ▲