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.
Among the four most populous states, California is fourth-most expensive over 18 years at $312,300. — Martie Bowser, Fortune, 24 Oct. 2026 Rugged island Flores, located in the southeast of the Indonesian archipelago, is one of a handful of islands in the world’s most populous Muslim nation with a Christian majority, with 80% of its two million inhabitants identifying as Roman Catholic. — Chas Newkey-Burden, TheWeek, 22 Oct. 2026 Georgia’s early voting surge is fueled by a growing geographic divide, with voters in metro Atlanta’s suburbs and other more populous areas casting ballots well ahead of their 2022 pace while much of rural Georgia lags behind. — Charles Minshew, AJC.com, 22 Oct. 2026 The speed of the work comes at a critical time for Canada’s most populous province. — Aman Tripathi, Interesting Engineering, 16 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

Browse Nearby Words

Cite this Entry

“Populous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/populous. Accessed 28 Oct. 2026.

Kids Definition

populous

adjective
: having a large population

More from Merriam-Webster on populous

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster