underworld

noun

un·​der·​world ˈən-dər-ˌwərld How to pronounce underworld (audio)
Synonyms of underworldnext
1
: the place of departed souls : hades
2
archaic : earth
3
: the side of the earth opposite to one : antipodes
4
: a social sphere below the level of ordinary life
the town's seedy underworld
especially : the world of organized crime

Examples of underworld in a Sentence

a magazine article taking an insightful look at the underworld inhabited by street people
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 waters around the archipelago are brimming with one-of-a-kind dive sites, including a manta ray cleaning station, a coral underworld known as Melissa’s Garden and window-like swim-throughs. Rebecca Ann Hughes, Forbes.com, 20 May 2026 The sequel series is based on similar – and familiar – concepts of love, loyalty and betrayal, once again set in the mafia underworld. Jesse Whittock, Deadline, 14 May 2026 What began as a documentary about the criminal underworld evolved into a fictional – and disturbing – portrait that blurs the line between reality and imagination. Roberto Prieto, Variety, 13 May 2026 The titular vampire gang has formed a band, and when its members start to shred, the stage sinks down to create a mosh pit—a hellish underworld into which victims later drop. Emily Nussbaum, New Yorker, 30 Apr. 2026 See All Example Sentences for underworld

Word History

First Known Use

1598, in the meaning defined at sense 1

Time Traveler
The first known use of underworld was in 1598

Browse Nearby Words

Cite this Entry

“Underworld.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underworld. Accessed 22 May. 2026.

Kids Definition

underworld

noun
un·​der·​world ˈən-dər-ˌwərld How to pronounce underworld (audio)
1
: the place of the souls of the dead
2
: the side of the earth opposite to one
3
: the world of organized crime

More from Merriam-Webster on underworld

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