duopoly

noun

du·​op·​o·​ly du̇-ˈä-pə-lē 

 also  dyu̇-

plural duopolies

1

: an oligopoly limited to two sellers

2

: preponderant influence or control by two political powers

duopolistic

d(y)u̇-ˌä-pə-ˈli-stik 

adjective

Examples of duopoly in a Sentence

Recent Examples on the Web

Other Democrats began to organize around the figure of Andrew Jackson, and by the 1830s, a new duopoly had emerged with Jackson and his Democrats squaring off against the new Whig Party (cobbled together from the remains of the National Republicans). —Joseph Thorndike, Forbes.com, 21 July 2025

Roche is one of the many pharma companies racing to break up the current weight loss drug duopoly held by Novo Nordisk, the manufacturer of Ozempic and Wegovy, and Eli Lilly, the maker of Zepbound. —Bruce Gil, Quartz, 17 July 2024

First is the industry’s dynamics as Lyft operates in a duopoly with Uber in the rideshare market. —Kenneth Squire, CNBC, 31 May 2025

Recent consolidation in sports data has left Genius and Sportradar as a near duopoly in the U.S. Genius stock has more than doubled in the past 12 months, and 22% so far this calendar year, bucking broader market volatility. —Eben Novy-Williams, Sportico.com, 25 Apr. 2025

Word History

Etymology

duo- + -poly (as in monopoly)

First Known Use

1920, in the meaning defined at sense 1

Rhymes for duopoly

• melancholy
• pulmonale
• triticale
• akali
• bengali
• diwali
• loblolly
• naphtali
• nepali
• secale
• somali
• colley