as in underworld
a social sphere that exists outside of the mainstream unable to get work in mainstream films, the actor ended up in Hollywood's underbelly—the porn industry

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as in back
a vulnerable point the vast, thinly guarded southern border was obviously the underbelly of the nation's line of defense

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Thesaurus Entries Near underbelly

Cite this Entry

“Underbelly.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underbelly. Accessed 22 May. 2024.

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