- (transitive) to confirm or support (facts, opinions, etc), esp by providing fresh evidence
WordReference Random House Learner's Dictionary of American English © 2026
cor•rob•o•rate /kəˈrɑbəˌreɪt/USA pronunciation
v. [~ + object], -rat•ed, -rat•ing.
cor•rob•o•ra•tive /kəˈrɑbəˌreɪtɪv, -ərətɪv/USA pronunciation cor•rob•o•ra•to•ry /kəˈrɑbərəˌtɔri/USA pronunciation adj.: corroborative testimony.
WordReference Random House Unabridged Dictionary of American English © 2026- to support by giving proof; confirm: corroborated my account of the accident.
cor•rob•o•ra•tive /kəˈrɑbəˌreɪtɪv, -ərətɪv/USA pronunciation cor•rob•o•ra•to•ry /kəˈrɑbərəˌtɔri/USA pronunciation adj.: corroborative testimony.
cor•rob•o•rate
(v. kə rob′ə rāt′;adj. kə rob′ər it),USA pronunciation v., -rat•ed, -rat•ing, adj.
v.t.
adj.
cor•rob•o•ra•tive
(kə rob′ə rā′tiv, -ər ə tiv),USA pronunciation cor•rob′o•ra•to′ry, adj.
cor•rob′o•ra′tive•ly, cor•rob′o•ra•to′ri•ly, adv.
cor•rob′o•ra′tor, n.
v.t.
- to make more certain;
confirm:He corroborated my account of the accident.
adj.
- [Archaic.]confirmed.
- Latin corrōborātus past participle of corrōborāre to strengthen, equivalent. to cor- cor- + rōbor(āre) to make strong (derivative of rōbor, rōbur oak (hence, strength); see robust) + -ātus -ate1
- 1520–30
cor•rob′o•ra′tor, n.
- 1. verify, authenticate, support, validate.
Collins Concise English Dictionary © HarperCollins Publishers::
corroborate vb /kəˈrɒbəˌreɪt/
'corroboratory' also found in these entries (note: many are not synonyms or translations):