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underworld

American  
[uhn-der-wurld] / ˈʌn dərˌwɜrld /

noun

  1. the criminal element of human society.

  2. the imagined abode of departed souls or spirits; Hades.

  3. a region below the surface, as of the earth or a body of water.

  4. the opposite side of the earth; the antipodes.

  5. Archaic. the earth.


underworld British  
/ ˈʌndəˌwɜːld /

noun

    1. criminals and their associates considered collectively

    2. ( as modifier )

      underworld connections

  1. the regions below the earth's surface regarded as the abode of the dead; Hades

"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

Etymology

Origin of underworld

First recorded in 1600–10; under- + world

Vocabulary lists containing underworld

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.

Appeared in the October 24, 2025, print edition as 'A Worthy Trip Into the Underworld'.

From The Wall Street Journal • Oct. 23, 2025

Sussy’s second defining feature is his love of hats, namely a tall, jaunty gat, similar to the ones that the Saja Boys wear in the Underworld and in their performance of “Your Idol.”

From Salon • Jul. 2, 2025

Times bestselling book “Corporate Rock Sucks: The Rise & Fall of SST Records” and a weekly Substack about books, music, and books about music called Message from the Underworld.

From Los Angeles Times • May 29, 2025

Their skull-shaped body may represent Mictlantecuhtli, the Aztec Lord of the Underworld, and the iconic screaming sound may have prepared human sacrifices for their mythological descent into Mictlan, the Aztec underworld.

From Science Daily • Nov. 19, 2024

I need a soul reaped from the Underworld.

From "The Marvellers" by Dhonielle Clayton