underpinning
noun
un·der·pin·ning
ˈən-dər-ˌpi-niŋ 
1
: the material and construction (such as a foundation) used for support of a structure
2
3
: underwear
—usually used in plural
4
: a person's legs
—usually used in plural
Examples of underpinning in a Sentence
the underpinnings of the theory have recently been called into question
the underpinnings of the bridge were seriously damaged in the collision
Recent Examples on the Web
The unibody structure and assembly were essentially British, with mechanical underpinnings from Volvo’s Amazon/122 series.
—
Robert Ross, Robb Report, 3 Oct. 2025
Certain other kinds—like ovarian, endometrial, and even pancreatic, stomach, and melanoma—can share genetic underpinnings with breast cancer, so having these in your bloodline could up your risk.
—Erica Sloan, SELF, 1 Oct. 2025
That picture began to change in the early 2000s, as researchers uncovered the biological underpinnings of different breast cancer subtypes.
—Lauryn Higgins, Flow Space, 24 Sep. 2025
Their recovery toolkits combine medication that goes to work on the biochemical underpinnings of addiction with community, connection and accountability that reinforce their recovery.
—Jonathan Hunt-Glassman, Fortune, 21 Sep. 2025
See All Example Sentences for underpinning
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Robert Ross, Robb Report, 3 Oct. 2025
Certain other kinds—like ovarian, endometrial, and even pancreatic, stomach, and melanoma—can share genetic underpinnings with breast cancer, so having these in your bloodline could up your risk.
—Erica Sloan, SELF, 1 Oct. 2025
That picture began to change in the early 2000s, as researchers uncovered the biological underpinnings of different breast cancer subtypes.
—Lauryn Higgins, Flow Space, 24 Sep. 2025
Their recovery toolkits combine medication that goes to work on the biochemical underpinnings of addiction with community, connection and accountability that reinforce their recovery.
—Jonathan Hunt-Glassman, Fortune, 21 Sep. 2025
See All Example Sentences for underpinning
Cite this Entry
“Underpinning.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underpinning. Accessed 5 Oct. 2025.
Copy CitationKids Definition
underpinning
noun
un·der·pin·ning
ˈən-dər-ˌpin-iŋ
1
: the foundation used for support of a structure
2
3
: a person's legs
—usually used in plural
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