corroboration

From Middle English corroboracioun, borrowed from Late Latin corrōborātiō (“strengthening”).

corroboration (countable and uncountable, plural corroborations)

The act of corroborating, strengthening, or confirming; addition of strength; confirmation
- 1857, Herman Melville, chapter 23, in The Confidence-Man:
  Fallacious enough doctrine when wielded against one's prejudices, but in corroboration of cherished suspicions not without likelihood.
- September 16 2016, Jonah Goldberg writing in the Baltimore Sun, Hillary's health is a valid issue:
  Social media lighted up with corroborations that lower Manhattan was the meteorological equivalent of the jungles of Borneo.
That which corroborates.
- 2018, James Lambert, “A multitude of ‘lishes’: The nomenclature of hybridity”, in English World-Wide‎, page 2:
  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.

the act of corroborating, strengthening, or confirming

Bulgarian: потвърждаване (potvǎrždavane)
Dutch: bekrachtiging (nl)
Galician: corroboración (gl) f
Greek: επιβεβαίωση (el) f (epivevaíosi), επίρρωση (el) f (epírrosi)
Manx: co-niartaghey m, co-niartey m
Marathi: दुजोरा (mr) m (dujorā)
Ottoman Turkish: تأیید (teʼyid)
Portuguese: corroboração (pt) f
Russian: подтвержде́ние (ru) n (podtverždénije), подкрепле́ние (ru) n (podkreplénije)
Spanish: corroboración (es) f
Turkish: teyit (tr)

that which corroborates

English