Corroborate (kr-rb-rt), v. t. [imp. & p. p. Corroborated (-rtd); p. pr. & vb. n. Corroborating (-rtng). ]
Etymology: [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.
1 other Webster entry under this spelling
Corroborate (-rt), a.
Corroborated. [Obs.] Bacon.