underpin
verb
un·der·pin
ˌən-dər-ˈpin 
underpinned; underpinning; underpins
1
: support, substantiate
underpin a thesis with evidence
2
: to form part of, strengthen, or replace the foundation of
underpin a structure
underpin a sagging building
Examples of underpin in a Sentence
a wall underpinned by metal beams
the central beliefs that underpin a free society
Recent Examples on the Web
With those metrics underpinning this highly scientific assessment, Upgraded Points has determined the winner to be Logan International Airport in Boston.
—
John Metcalfe, Mercury News, 27 Nov. 2025
Satellites underpin modern and critical infrastructure today, such as telecommunications, science and national security .
—Tasmin Lockwood, CNBC, 27 Nov. 2025
Beneath the spectacle, Corbould emphasised the countless hours of planning and safety checks that underpin every stunt, because the comfort and safety of actors and stuntmen is paramount.
—Udita Jhunjhunwala, Variety, 26 Nov. 2025
Those figures underpin how much Atlanta depends on him as a move-the-chains and vertical threat.
—Rowan Fisher-Shotton, MSNBC Newsweek, 26 Nov. 2025
See All Example Sentences for underpin
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John Metcalfe, Mercury News, 27 Nov. 2025
Satellites underpin modern and critical infrastructure today, such as telecommunications, science and national security .
—Tasmin Lockwood, CNBC, 27 Nov. 2025
Beneath the spectacle, Corbould emphasised the countless hours of planning and safety checks that underpin every stunt, because the comfort and safety of actors and stuntmen is paramount.
—Udita Jhunjhunwala, Variety, 26 Nov. 2025
Those figures underpin how much Atlanta depends on him as a move-the-chains and vertical threat.
—Rowan Fisher-Shotton, MSNBC Newsweek, 26 Nov. 2025
See All Example Sentences for underpin
Cite this Entry
“Underpin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underpin. Accessed 29 Nov. 2025.
Copy CitationKids Definition
underpin
verb
un·der·pin
-ˈpin
1
: to give support to
underpin an argument with evidence
2
: to form part of, strengthen, or replace the foundation of
underpin a structure
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