duopoly
C1/C2Formal, Academic, Business/Technical
Definition
Meaning
A market or industry dominated by only two major suppliers or competitors.
Any situation where power, control, or dominance is shared between only two parties, extending beyond economics to politics, media, or technology.
Linguistics
Semantic Notes
Implies a lack of significant competition beyond the two entities. Often carries a negative connotation of restricted choice and potential collusion.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. Spelling is identical.
Connotations
Identical connotations in both varieties.
Frequency
Slightly more frequent in UK media/political discourse regarding the two-party system (Conservative vs Labour).
Vocabulary
Collocations
Grammar
Valency Patterns
duopoly of [two entities]duopoly in [market/industry]duopoly between [X] and [Y]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “[Not commonly used in idioms]”
Usage
Context Usage
Business
Used to describe markets like soft drinks (Coca-Cola/Pepsi) or aircraft manufacturing (Airbus/Boeing).
Academic
Common in economics, political science, and media studies texts.
Everyday
Rare in casual conversation; used in news/political commentary.
Technical
A specific market structure in microeconomic theory.
Examples
By Part of Speech
verb
British English
- The two firms sought to duopolise the telecoms sector.
- The market has been duopolised for decades.
American English
- The two firms sought to duopolize the telecom sector.
- The market has been duopolized for decades.
adverb
British English
- [No standard adverbial form in use]
American English
- [No standard adverbial form in use]
adjective
British English
- The duopolistic practices were investigated by regulators.
- A duopolistic market structure.
American English
- The duopolistic practices were investigated by regulators.
- A duopolistic market structure.
Examples
By CEFR Level
- [Too advanced for A2]
- Two big companies have a duopoly in this market.
- The duopoly means prices are high.
- The aviation industry is often described as a duopoly between Airbus and Boeing.
- Regulators are concerned that the merger will create a harmful duopoly.
- The political duopoly of the two major parties has stifled innovative policy ideas for years.
- Critics argue that the tech duopoly engages in anti-competitive behaviour to maintain its dominance.
Learning
Memory Aids
Mnemonic
Think 'DUO' (two) + 'POLY' (seller) = a market with only two main sellers.
Conceptual Metaphor
MARKET AS A BATTLEFIELD (where only two armies remain).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating as 'дуополия' in non-technical contexts as it's a heavy calque; 'двойная монополия' is more descriptive but imprecise.
Common Mistakes
- Using it for any two competitors (must be dominant market control).
- Confusing with 'oligopoly' (more than two).
- Misspelling as 'duopoloy'.
Practice
Quiz
Which of the following best describes a 'duopoly'?
FAQ
Frequently Asked Questions
A monopoly has only one dominant seller, while a duopoly has two.
Rarely. While competition between two firms can drive innovation, the lack of broader competition often leads to higher prices and collusion.
No, it can describe any domain dominated by two entities, such as a two-party political system or two dominant media companies.
The market structure typically becomes an 'oligopoly' (dominated by a small number of sellers).