corroborate

/kə-ˈrä-bə-ˌrāt/

Latin corroboratus, past participle of corroborare, from com- + robor-, robur strength

verb

  1. to support with evidence or authority : make more certain

confirm corroborate substantiate verify authenticate validate mean to attest to the truth or validity of something. confirm implies the removing of doubts by an authoritative statement or indisputable fact. corroborate suggests the strengthening of what is already partly established.