Definition of "corroboration"

Fallacious enough doctrine when wielded against one's prejudices, but in corroboration of cherished suspicions not without likelihood.

1857, Herman Melville, chapter 23, in The Confidence-Man

Social media lighted up with corroborations that lower Manhattan was the meteorological equivalent of the jungles of Borneo.

September 16 2016, Jonah Goldberg writing in the Baltimore Sun, Hillary's health is a valid issue

Urban Dictionary records at least 66 of the terms found by the present research, but as this dictionary liberally accepts words, definitions, and sample sentences based solely on the say-so of contributors, in the absence of corroboration from other sources the authenticity of some entries must remain dubious.

2018, James Lambert, “A multitude of ‘lishes’: The nomenclature of hybridity”, in English World-Wide‎, page 2