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 situation is grim on its own, given the complexity of Ethiopia, Africa’s second most populous nation and the home to dozens of different ethnic groups. — Ishaan Tharoor, New Yorker, 7 Oct. 2026 This area is similar in size to the Santiago Metropolitan Region, the country’s largest and most populous area. — Nayara Batschke, Los Angeles Times, 7 Oct. 2026 Nigeria, the continent’s most populous country and one facing a presidential election in three months, is a prime target of these campaigns of disinformation and misinformation. — The Monitor's Editorial Board, Christian Science Monitor, 6 Oct. 2026 Analysts say Lula has a potentially narrow path to victory through boosting voter turnout in the three most populous states — Sao Paulo, Minas Gerais and Rio de Janeiro — that also have above-average abstention rates. — ABC News, 5 Oct. 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 14 Oct. 2026.

Kids Definition

populous

adjective
: having a large population

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