malignant
C2formal, medical/technical
Definition
Meaning
Very dangerous or harmful in effect; (especially of a tumor) cancerous and likely to invade other tissues.
Characterized by intense ill will or desire to harm; showing great malevolence.
Linguistics
Semantic Notes
Primarily used in medical contexts (malignant tumor/cancer) and metaphorical extensions describing harmful intentions or qualities. Its opposite 'benign' applies in both medical and general contexts.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Both use 'malignant' identically in medical and figurative contexts.
Connotations
Equally strong negative connotations in both varieties.
Frequency
Slightly higher frequency in American English due to medical discourse prevalence, but negligible difference.
Vocabulary
Collocations
Grammar
Valency Patterns
be + malignantbecome + malignantprove + malignantdescribe as + malignantVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “malignant narcissism”
- “a malignant star (archaic/poetic)”
Usage
Context Usage
Business
Rare, except metaphorically: 'a malignant corporate culture'.
Academic
Common in medical, biological, and psychological research.
Everyday
Mostly in health discussions; figurative use is literary/formal.
Technical
Core term in oncology and pathology.
Examples
By Part of Speech
verb
British English
- No standard verb form in current use.
American English
- No standard verb form in current use.
adverb
British English
- No standard adverb form; 'malignantly' is rare/archaic.
- He smiled malignantly (literary).
American English
- No standard adverb form; 'malignantly' is rare/archaic.
- She stared malignantly at her rival (literary).
adjective
British English
- The biopsy revealed a malignant tumour requiring immediate treatment.
- His malignant glare made everyone uncomfortable.
American English
- She was diagnosed with a malignant melanoma.
- The regime's malignant policies led to widespread suffering.
Examples
By CEFR Level
- The doctor said the lump was not malignant.
- A malignant person can be very unkind.
- They found malignant cells during the routine check-up.
- His malignant comments hurt her feelings deeply.
- Early detection of a malignant growth significantly improves survival rates.
- The dictator's malignant influence corrupted the entire government.
- The tumour, initially thought benign, proved to be highly malignant and metastatic.
- Her criticism was not just harsh but positively malignant in its intent to destroy his reputation.
Learning
Memory Aids
Mnemonic
Think: MALe + IGNite + ANT → a male ant that ignites (starts) harmful fires → harmful, dangerous.
Conceptual Metaphor
EVIL/DISEASE IS A MALIGNANT GROWTH (e.g., 'malignant racism spreads through society').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Не путать с 'злонамеренный' (spiteful) — 'malignant' сильнее и часто медицинское.
- В русском 'злокачественный' почти всегда медицинское; в английском шире.
Common Mistakes
- Confusing 'malignant' with 'malicious' (more about intent).
- Using it for mild harm instead of severe danger.
- Misspelling as 'maligant'.
Practice
Quiz
In which context is 'malignant' most precisely used?
FAQ
Frequently Asked Questions
In medicine, 'malignant' means cancerous and spreading; 'benign' means non-cancerous and localised. Figuratively, 'malignant' means very harmful, 'benign' means gentle or harmless.
Yes, but it's formal/literary. It describes someone showing intense ill will or malevolence, e.g., 'a malignant character'.
Yes, but it's a strong, formal word for things that are deeply harmful or evil, like 'malignant influence', 'malignant ideology'.
'Malignancy' (medical condition or malevolent quality) and 'malignance' (state of being malignant, less common).
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