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Related to underpin: underscore
tr.v. un·der·pinned, un·der·pin·ning, un·der·pins
1. To support from below, as with props, girders, or masonry.
2. To give support or substance to: assumptions that underpinned their claims.
vb (tr) , -pins, -pinning or -pinned
1. (Building) to support from beneath, esp by a prop, while avoiding damaging or weakening the superstructure: to underpin a wall.
2. to give corroboration, strength, or support to
v.t. -pinned, -pin•ning.
1. to prop up or support from below; strengthen.
2. to replace or strengthen the foundation of.
3. to substantiate or corroborate.
Past participle: underpinned
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|Verb||1.||underpin - support from beneath|
|2.||underpin - support with evidence or authority or make more certain or confirm; "The stories and claims were born out by the evidence"|