toxic
High (CEFR B2+)Neutral formal/informal; widely used across registers, especially in social and workplace contexts
Definition
Meaning
poisonous; containing or being poisonous material
harmful, unpleasant, or damaging in a non-physical way (e.g., to relationships, environments, or mental health); extremely negative or hostile
Linguistics
Semantic Notes
Originally meaning 'poisonous' in a literal chemical/biological sense; now more commonly used metaphorically to describe harmful social/psychological environments, behaviours, or people. This metaphorical use has become dominant in everyday language.
Dialectal Variation
British vs American Usage
Differences
No significant differences in core meaning or usage. The metaphorical extension is equally common in both varieties.
Connotations
Identical connotations of physical danger and metaphorical harm.
Frequency
Equally high frequency in both varieties; slightly more prevalent in American media discourse about workplace/social dynamics.
Vocabulary
Collocations
Grammar
Valency Patterns
toxic to + noun (toxic to marine life)toxic for + noun (toxic for the environment)Adjective + Noun structure (toxic substance)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “toxic workplace”
- “toxic positivity”
- “toxic asset”
Usage
Context Usage
Business
Refers to damaging workplace culture, unproductive relationships, or financially risky assets (e.g., 'toxic corporate culture', 'toxic debt').
Academic
Used in environmental science, chemistry, psychology, and sociology to describe literal poisons or harmful social dynamics.
Everyday
Commonly describes unhealthy relationships, negative social media environments, or unpleasant people.
Technical
In chemistry/environmental science: having specific poisonous properties; in finance: assets likely to cause significant loss.
Examples
By Part of Speech
verb
British English
- The company was toxicked by the scandal.
American English
- The factory toxicked the local river.
adverb
British English
- The substance leaked toxically into the soil.
American English
- The comments were toxically negative.
Examples
By CEFR Level
- Some plants are toxic if you eat them.
- Don't drink that – it could be toxic.
- The factory was fined for dumping toxic waste.
- Their relationship became quite toxic.
- The toxic atmosphere in the office led to high staff turnover.
- Social media can sometimes create a toxic environment for debate.
- The bank's portfolio was burdened with toxic assets from the subprime mortgage crisis.
- The discourse around the issue has become so toxic that constructive dialogue is nearly impossible.
Learning
Memory Aids
Mnemonic
Think of a 'toxic' skull-and-crossbones warning label on a bottle – it means poison. Now apply that label to bad relationships or work environments.
Conceptual Metaphor
POISON/SICKNESS FOR SOCIAL/PSYCHOLOGICAL HARM (e.g., a toxic relationship 'poisons' one's wellbeing; toxic behaviour 'infects' a team).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid using 'токсичный' for minor annoyances; in English it implies serious, sustained harm.
- Do not confuse with 'ядовитый' which is more literal; 'toxic' covers both literal and metaphorical poison.
Common Mistakes
- Using 'toxic' for temporary minor disagreements (overuse weakens impact).
- Incorrect: 'He was toxic to me yesterday.' Correct: 'His behaviour is toxic.' – usually describes patterns, not single events.
Practice
Quiz
Which usage of 'toxic' is metaphorical rather than literal?
FAQ
Frequently Asked Questions
Yes, but typically it describes their consistent behaviour or influence ('He has toxic behaviour'), not their innate character. Calling someone 'a toxic person' is common but somewhat informal.
Yes, it is exclusively negative. There is no positive connotation. Even 'toxic positivity' criticises excessive, dismissive optimism.
They are often synonyms for literal poison. 'Toxic' is more technical (chemistry/biology) and is the standard term for metaphorical harm. 'Poisonous' is more general for literal poison and less used metaphorically.
Yes, its metaphorical use (especially regarding relationships, workplaces, and online culture) has exploded since the early 2000s, influenced by psychology, HR, and social media discourse.
Collections
Part of a collection
Environment
B1 · 47 words · Nature, ecology and environmental issues.