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.
The state announced last week the first death in the outbreak — a school-age child who was not vaccinated and had no underlying health conditions. Alexandra Banner, CNN, 5 Mar. 2025 JPMorgan said the results were broadly in line with underlying assumptions, and Flutter is its top overweight pick within the gaming sector. Robert Olsen, Forbes, 5 Mar. 2025 But analysts doubt these measures directly nor adequately address the underlying reasons for lackluster consumption: public anxiety about future earnings amid a torpid economy and the falling values of real estate, which forms the principal store of household wealth. Charlie Campbell, TIME, 5 Mar. 2025 All the public could see would be a name, age, gender, hometown and cause of death — not the underlying steps coroners take to reach conclusions. Audrey Dutton, ProPublica, 5 Mar. 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 12 Mar. 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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