underpinning

American  

[uhn-der-pin-ing] / ˈʌn dərˌpɪn ɪŋ /

noun

1. a system of supports beneath a wall or the like.

2. Often underpinnings. a foundation or basis.

   to uncover the emotional underpinnings of an illness.

3. Informal. underpinnings,

   1. underwear, especially women's underwear.

   2. the legs.

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underpinning British  

/ ˈʌndəˌpɪnɪŋ /

noun

1. a structure of masonry, concrete, etc, placed beneath a wall to provide support

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Etymology

Origin of underpinning

First recorded in 1480–90; under + pin + -ing ¹

Example Sentences

Much of the debate around the data underpinning the quiet revival centres on the differing survey methods used by different researchers.

From BBC

And underpinning the team are two key things - total honesty and trust.

From BBC

Fledgling Indian artificial intelligence companies showcased homegrown technologies this week at a major summit in New Delhi, underpinning big dreams of becoming a global AI power.

From Barron's

Most of TC Energy’s earnings are underpinning by rate-regulated or long-term “take-or-pay” contracts, offering stability in cash flows and limited exposure to commodity price moves.

From The Wall Street Journal

That type of divergence has piqued the interest of investors who question how to value AI’s ultimate payoff or struggle to understand the financial arrangements underpinning massive infrastructure spending.

From The Wall Street Journal