Cor·rob·o·rate v. t. [imp. & p. p. Corroborated p. pr. & vb. n. Corroborating ]
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.