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
Because delivering the digital infrastructure that underpins a smart city isn’t a short-term task.
—
Brendan O’Reilly, Forbes.com, 6 June 2025
Dollar Tree’s steady growth could underpin a breakout for the stock, according to JPMorgan.
—Brian Evans, CNBC, 5 June 2025
And that means that vibe coding — as with any technology that suddenly shifts a good from scarcity to plenty — has the potential to upturn much of the core calculus, thinking and economics that underpin how and what companies currently do and build.
—Gina Chua, semafor.com, 5 June 2025
The big assumptions that underpin that projection go something like this:
1) Tariffs will produce trillions of dollars in revenue without hurting US economic growth.
—Phil Mattingly, CNN Money, 4 June 2025
See All Example Sentences for underpin
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Brendan O’Reilly, Forbes.com, 6 June 2025
Dollar Tree’s steady growth could underpin a breakout for the stock, according to JPMorgan.
—Brian Evans, CNBC, 5 June 2025
And that means that vibe coding — as with any technology that suddenly shifts a good from scarcity to plenty — has the potential to upturn much of the core calculus, thinking and economics that underpin how and what companies currently do and build.
—Gina Chua, semafor.com, 5 June 2025
The big assumptions that underpin that projection go something like this:
1) Tariffs will produce trillions of dollars in revenue without hurting US economic growth.
—Phil Mattingly, CNN Money, 4 June 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 10 Jun. 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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