Synonyms of populousnext
1
a
: densely populated
b
: having a large population
2
a
b
: filled to capacity
populously adverb
populousness noun

Did you know?

With a metropolitan area of more than 20 million people, Mexico City could be called the world's second or third most populous city. And the nearby Aztec city of Tenochtitlán was one of the largest cities in the world even when Hernán Cortés arrived there in 1519. But by the time Cortés conquered the city in 1521 it wasn't nearly so populous, since European diseases had greatly reduced the population. Avoid confusing populous and populace, which are pronounced exactly the same.

Examples of populous in a Sentence

the most populous state in the U.S.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The people moving in are pretty young — the most populous age groups were people ages 21 to 30 followed by people age 31 to 40. Idaho Statesman, 26 Aug. 2026 Pennsylvania is the Keystone State, and except for Reacher’s ally, Detective Tamara Green, the law enforcers of its most populous city are depicted in this chapter as the Keystone Cops. Chris Klimek, Vulture, 26 Aug. 2026 Mexicali, with more than 1 million residents, is one of the most populous cities along the Mexican border and is strategically important because of its close commercial and social ties with Calexico. ABC News, 25 Aug. 2026 Lake Ontario sits between Ontario, Canada's most populous province, and New York state. Kaia Hubbard, CBS News, 25 Aug. 2026 See All Example Sentences for populous

Word History

Etymology

Middle English populous, populus, borrowed from Latin populōsus, from populus people entry 1 + -ōsus -ous

First Known Use

15th century, in the meaning defined at sense 1a

Time Traveler
The first known use of populous was in the 15th century

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Cite this Entry

“Populous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/populous. Accessed 2 Sep. 2026.

Kids Definition

populous

adjective
: having a large population

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