corroborate
NAmE//kəˈrɑbəˌreɪt//
[intransitive, transitive, often passive] corroborate (something) (formal)NAmE//kəˌrɑbəˈreɪʃn//
noun [uncountable] The prosecution provided corroboration for her allegation.Check pronunciation: corroborate
Definition of corroborate from the Oxford Advanced American Dictionary