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.
In a recent review paper, our team summarized how chronic stress is a hidden but powerful factor underlying cognitive aging, or the speed at which your cognitive performance slows down with age. Jennifer E. Graham-Engeland, The Conversation, 28 May 2025 Cox, which says ISPs shouldn't have to terminate customers based on unproven allegations of copyright infringement, has been seeking Supreme Court review of Sony's victory in the underlying lawsuit. ArsTechnica, 28 May 2025 While information about Chicano culture has increased, those who are steadfast enough to withstand the stares and learn about the underlying values are the ones who last, Thao said. Stephanie Yang, Los Angeles Times, 27 May 2025 And some business and workplace experts say that even the companies that have announced DEI retreats are mostly making superficial and semantic changes, while remaining committed to the underlying goals of creating more opportunities for all workers. Maria Aspan, NPR, 27 May 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

Browse Nearby Words

Cite this Entry

“Underlie.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underlie. Accessed 4 Jun. 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

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!