Underpin

v. t.	1.	To lay stones, masonry, etc., under, as the sills of a building, on which it is to rest. [imp. & p. p. Underpinned ; p. pr. & vb. n. Underpinning.]
	2.	To support by some solid foundation; to place something underneath for support.

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" Synonyms: bear out, corroborate, support

agree, bear out, check, correspond, corroborate, fit, gibe, jibe, match, support, tally