- present participle of underpin.
underpinning
Americannoun
-
underpinnings
plural
-
a system of supports beneath a wall or the like.
-
Often underpinnings. a foundation or basis.
to uncover the emotional underpinnings of an illness.
-
Informal. underpinnings,
-
underwear, especially women's underwear.
-
the legs.
-
noun
Other Word Forms
Noun Inflected Forms
Etymology
Origin of underpinning
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
One of the most common assumptions underpinning the “Gen Z doesn’t drink” narrative is that young adults simply don’t want to go out anymore.
From Salon ● Aug. 15, 2026
“The ‘Full Fare Rule’ is a vital underpinning of modern flight shopping and must not be repealed or watered down in any way,” wrote Jason Rabinowitz on July 8.
From Los Angeles Times ● Aug. 14, 2026
Survival-economy behavior can buy time but will eventually erode Iran’s financial underpinning.
From The Wall Street Journal ● Aug. 11, 2026
The one thing underpinning the North Africans' success has been long-term investment backed by the country's King Mohammed VI.
From BBC ● Jul. 4, 2026
In the recognition by Pythagoras and Plato that the Cosmos is knowable, that there is a mathematical underpinning to nature, they greatly advanced the cause of science.
From "Cosmos" by Carl Sagan
![]()
Christine Idzelis looked into the broad underpinnings of value stocks’ resurgence, which can set up a longer-term period of outperformance.
From MarketWatch ● Jun. 18, 2026
He charms the staff with his knowledge of these obscure machines – pointing out the bellows that power a church organ, and the pneumatic underpinnings of a piano roll player.
From BBC ● May 14, 2026
"Our study reveals unique biological underpinnings of mental health that are often obscured by broad diagnostic categories."
From Science Daily ● May 4, 2026
The underpinnings of the department’s proposed rule is that the fiduciary process must be undertaken by loyal and conflict-free plan fiduciaries.
From The Wall Street Journal ● Mar. 30, 2026
From those underpinnings of football, an enormously strong bond developed between the two.
From "Friday Night Lights: A Town, A Team, And A Dream" by H.G. Bissinger
![]()
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.