underlie

verb

un·​der·​lie ˌən-dər-ˈlī How to pronounce underlie (audio)

transitive verb

1
: to lie or be situated under
2
: to be at the basis of : form the foundation of : support
ideas underlying the revolution
3
: to exist as a claim or security superior and prior to (another)
4
archaic : to be subject or amenable to

Examples of underlie in a Sentence

A tile floor underlies the rug. The river is underlain by limestone. We discussed the principles that underlay their methods. A theme of revenge underlies much of her writing.
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.
Some words are censored, while others are popularized through online memes and trends, meaning that the very structure underlying social media is responsible for rerouting our language in real time. Adam Aleksic, People.com, 14 July 2025 Viewing it through the lens of corporate finance, one thing became disturbingly clear: the underlying business model of higher education is deeply flawed. Matthew Scogin, Forbes.com, 14 July 2025 But the dustup over the building renovation is just a superficial sign of the underlying tension between the administration and the central bank. Scott Horsley, NPR, 14 July 2025 This shift could dismantle the Housing First model, which provides stable housing and support services without requiring individuals to resolve underlying issues first. Miami Herald Archives, Miami Herald, 10 July 2025 See All Example Sentences for underlie

Word History

First Known Use

before the 12th century, in the meaning defined at sense 4

Time Traveler
The first known use of underlie was before the 12th century

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Cite this Entry

“Underlie.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underlie. Accessed 19 Jul. 2025.

Kids Definition

underlie

verb
un·​der·​lie ˌən-dər-ˈlī How to pronounce underlie (audio)
underlay -ˈlā How to pronounce underlie (audio) ; underlain -ˈlān How to pronounce underlie (audio) ; underlying -ˈlī-iŋ How to pronounce underlie (audio)
1
: to lie or be located under
2
: to form the foundation of : support
ideas underlying the revolt

More from Merriam-Webster on underlie

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