- present participle of underpin.
underpinning
Americannoun
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a system of supports beneath a wall or the like.
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Often underpinnings. a foundation or basis.
to uncover the emotional underpinnings of an illness.
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Informal. underpinnings,
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underwear, especially women's underwear.
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the legs.
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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.
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
Despite the concerns, resilient supplies and strong harvest progress are underpinning confident market sentiment, the FAO said.
From The Wall Street Journal • Jul. 3, 2026
The second order, on post-quantum cryptography, addresses a looming vulnerability: the rise of quantum computers powerful enough to unravel the public-key cryptography underpinning secure web browsing and blockchain networks.
From Barron's • Jun. 22, 2026
Insatiable demand for all things semiconductor and artificial intelligence is underpinning this stock market rally.
From Barron's • Jun. 17, 2026
That is, to replace its interweaving but independent voices with a more unified, streamlined sound, with the keyboard and cello locked together supportively, underpinning the sparring interplay of the two violins above them.
From "The Story of Music" by Howard Goodall
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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.