VERIFY

[verb] [T] - to make certain of or prove the truth or accuracy of (something)Are you able to verify your account/allegation/report/theory? [T]Rape is a crime which results in relatively few convictions as it is often difficult to verify. [T]Every athlete competing in this year's games must undergo a physical examination to verify their gender. [T]These figures are surprisingly high and they'll have to be verified. [T]Under interrogation, she verified (that) the tapes were authentic. [+ (that) clause]