underbelly

noun

un·​der·​bel·​ly ˈən-dər-ˌbe-lē How to pronounce underbelly (audio)
1
: a vulnerable area
also : a corrupt or sordid part
probing the underbelly of the entertainment industry
2
: the underside of a body or mass

Examples of underbelly in a Sentence

They exposed the underbelly of the nation's economic policy. the sordid underbelly of city life
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 Penguin, for control over Gotham City's criminal underbelly in this HBO Max series. Carson Blackwelder, PEOPLE, 15 Sep. 2025 The hypothesis is that these planets eventually lose the ability to sequester planet-warming greenhouse gases in their geologic underbelly. Quanta Magazine, 15 Sep. 2025 Tyler Perry's gone full sicko mode with Beauty in Black, a soapy thriller about an exotic dancer who infiltrates the lives of the Bellarie beauty dynasty and disrupts its connections to a seedy criminal underbelly. Randall Colburn, Entertainment Weekly, 11 Sep. 2025 Westman had decorated the assault rifle and shotgun with hate speech in ways that aligned with the dark underbelly of alt-right meme culture that regularly disparages people of color, Jewish people, the LGBTQ+, and people with disabilities. Natalie Eilbert, jsonline.com, 29 Aug. 2025 See All Example Sentences for underbelly

Word History

First Known Use

1942, in the meaning defined at sense 1

Time Traveler
The first known use of underbelly was in 1942

Browse Nearby Words

Cite this Entry

“Underbelly.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underbelly. Accessed 18 Sep. 2025.

Kids Definition

underbelly

noun
un·​der·​bel·​ly ˈən-dər-ˌbel-ē How to pronounce underbelly (audio)
: the underpart of a body or mass
the underbelly of a bomber
also : an area open to attack or damage
the army's underbelly
Last Updated: - Updated example sentences
Love words? Need even more definitions?

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