undergird


un·der·gird

transitive verb \ˌən-dər-ˈgərd\

: to strengthen or support (something) from below

Full Definition of UNDERGIRD

1
archaic :  to make secure underneath <took measures to undergird the ship — Acts 27:17(Revised Standard Version)>
2
:  to form the basis or foundation of :  strengthen, support <facts and statistics subtly undergird his commentary — Susan Q. Stranahan>

Examples of UNDERGIRD

  1. <the theory of evolution undergirds virtually all of modern biology>

First Known Use of UNDERGIRD

1526

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