Underpin Definition

ŭndər-pĭn
underpinned, underpinning, underpins
verb
underpinned, underpinning, underpins
To support or strengthen from beneath, as with props.
Webster's New World
To give support or substance to.
Assumptions that underpinned their claims.
American Heritage
To support or strengthen in any way; corroborate, substantiate, etc.
Webster's New World

Origin of Underpin

  • under- +"Ž pin.

    From Wiktionary

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Unscrambles

underpin