Dictionary.com
Thesaurus.com
Synonyms

populous

American  
[pop-yuh-luhs] / ˈpɒp yə ləs /

adjective

  1. full of residents or inhabitants, as a region; heavily populated.

  2. jammed or crowded with people.

    There's no more populous place than Times Square on New Year's Eve.

    Synonyms:
    teeming, packed
  3. forming or comprising a large number or quantity.

    Because of epidemics the tribes are not nearly so populous as they once were.


populous British  
/ ˈpɒpjʊləs /

adjective

  1. containing many inhabitants; abundantly populated

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • nonpopulous adjective
  • nonpopulously adverb
  • nonpopulousness noun
  • overpopulous adjective
  • overpopulously adverb
  • overpopulousness noun
  • populously adverb
  • populousness noun
  • unpopulous adjective
  • unpopulously adverb
  • unpopulousness noun

Etymology

Origin of populous

1400–50; late Middle English populus < Latin populōsus. See people, -ous

Explanation

A populous place is full of people. If you left your cabin in the Maine woods to spend the weekend in New York City, you'd be particularly aware of how populous the city is. Anything that's dense with people can be described as populous, like the country of China or the city of Mumbai or even a crowded airport. Populous is a Latin word that means simply "people." It was adopted by English in the 15th century to mean "full of people." The adjective populous is easy to confuse with the noun populace, "the people who live in a country," especially since they are homonyms, or words that sound exactly the same.

Keep Reading on Vocabulary.com

Vocabulary lists containing populous

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But his and millions of others' commutes have been snarled by brutal temperatures as Africa's most populous country fights a heatwave.

From Barron's • Apr. 8, 2026

A smaller 2026 crop, with rising demand for livestock feed in some of the most populous countries, including China and India, will put pressure on global corn prices, affecting everyone regardless of their nationality.

From Salon • Apr. 8, 2026

In the decade from 2007-17, Germany, Europe's most populous country and by far its strongest economy, was typically spending just 1.2% of its GDP on defence.

From BBC • Mar. 27, 2026

At the start of the two-day visit, the leaders of Africa's most populous country will be greeted by senior royals including Queen Camilla, and the Prince and Princess of Wales.

From BBC • Mar. 17, 2026

We began to descend towards the coast, the roadside growing more populous, the smell of the ocean in the air.

From "In the Time of the Butterflies" by Julia Alvarez