CERTIFY

[verb] - to state (something) officially, usually in writing, esp. that (something) is true or correctMy accountant has certified last year's tax figures. [T]I hereby certify that the above information is true and accurate. [+ that clause]The driver was certified (as) dead on arrival at the hospital. [T + object + (as) noun or adjective]The meat has been certified (as) fit for human consumption. [T + object + (as) noun or adjective]The cause of death was certified as pneumonia. [T + object + as noun or adjective]To certify someone is also to state officially that they are mentally ill.As a young man, he had been certified and sent to a hospital for the mentally ill. [T]In his later years the composer was certified insane. [T + object + adjective](US and ANZ) Certified mail is post for which proof of delivery is obtained.