Corroborate \Cor*rob"o*rate\ (k?r-r?b"?-r?t), v. t. [imp. & p. p. Corroborated (-r?`t?d); p. pr. & vb. n. Corroborating (-r?`t?ng). ] [L. corroboratus, p. p. of corroborare to corroborate; cor- + roborare to strengthen, robur strength. See Robust.]

1. To make strong, or to give additional strength to; to strengthen. [Obs.]

As any limb well and duly exercised, grows stronger, the nerves of the body are corroborated thereby. --I. Watts.

2. To make more certain; to confirm; to establish.

The concurrence of all corroborates the same truth. --I. Taylor.

Source: Webster's Revised Unabridged Dictionary (1913)