black fog: meaning, definition, pronunciation and examples
C1/C2Descriptive, Literary, Technical (meteorological, maritime), Figurative
Quick answer
What does “black fog” mean?
An extremely dense and dark fog that severely reduces visibility, often with a sooty or polluted appearance.
Audio
Pronunciation
Definition
Meaning and Definition
An extremely dense and dark fog that severely reduces visibility, often with a sooty or polluted appearance.
1. A metaphorical term for a state of severe confusion, depression, or mental obscurity. 2. In maritime or environmental contexts, refers to fog mixed with industrial smoke or pollution.
Dialectal Variation
British vs American Usage
Differences
More common in British English due to historical association with industrial 'pea-soupers' (smog). In American English, 'heavy fog' or 'thick fog' is more typical for literal use.
Connotations
UK: Strong historical link to industrial pollution (London smog). US: May carry a more literary or dramatic connotation.
Frequency
Low frequency in both varieties; higher in UK historical/literary contexts.
Grammar
How to Use “black fog” in a Sentence
The [PLACE] was enveloped/swathed/shrouded in a black fog.A black fog descended on/over [PLACE].He was in/emerged from a black fog of [EMOTION/STATE].Vocabulary
Collocations
Examples
Examples of “black fog” in a Sentence
verb
British English
- The valley black-fogged over by mid-afternoon, cutting off the village.
- Industrial fumes began to black-fog the entire estuary.
American English
- Smoke from the wildfires black-fogged the mountain passes.
- His thoughts black-fogged after the shocking news.
adverb
British English
- The hills disappeared black-foggily into the distance.
American English
- The sky turned black-foggily ominous.
adjective
British English
- We drove through black-fog conditions on the M25.
- He had a black-fog memory of the accident.
American English
- The harbor was closed due to black-fog warnings.
- She woke in a black-fog mood.
Usage
Meaning in Context
Business
Figuratively used to describe market uncertainty or a lack of clarity in strategy: 'The economic forecasts were lost in a black fog.'
Academic
Used in environmental studies or literary analysis to describe specific phenomena or metaphors.
Everyday
Rare. Used for dramatic effect to describe very bad weather or a very confused mental state.
Technical
Meteorology/Maritime: Describes an unusually dark and dense advection fog, possibly mixed with particulate matter.
Watch out
Common Mistakes When Using “black fog”
- Using 'black fog' for light mist or haze.
- Overusing the metaphorical sense in informal contexts.
- Confusing with 'black ice' (a different hazard).
FAQ
Frequently Asked Questions
Not exactly. 'Smog' specifically implies smoke + fog (pollution). 'Black fog' can be natural but very dense and dark, though it often implies pollution, especially historically.
Yes, but it's a strong, literary metaphor. In everyday speech, phrases like 'totally confused' or 'in a fog' are more common.
In British IPA, it's /fɒɡ/ (like 'hot' with a 'g'). In American, it's /fɑːɡ/ (like 'father' with a 'g').
No, it's a low-frequency, marked phrase. It's used for special emphasis rather than as a standard term for 'fog'.
An extremely dense and dark fog that severely reduces visibility, often with a sooty or polluted appearance.
Black fog is usually descriptive, literary, technical (meteorological, maritime), figurative in register.
Phrases
Idioms & Phrases
- “in a black fog (state of confusion)”
- “black fog of war/despair”
Learning
Memory Aids
Mnemonic
Think of the classic image of Sherlock Holmes in a dark, smoky London street—that's a 'black fog' of mystery and pollution.
Conceptual Metaphor
CONFUSION/IGNORANCE IS OBSCURING FOG; DEPRESSION IS DARK WEATHER.
Practice
Quiz
In which context is 'black fog' LEAST likely to be used literally?