definition of
certify

[1] #1 certify v. [attest, manifest, demonstrate, evidence] provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes; "His high fever attested to his illness"; "The buildings in Rome manifest a high level of architectural sophistication"; "This decision demonstrates his sen. wn

[2] #2 certify v. guarantee payment on; of checks. wn

[3] #3 certify v. [license, licence] authorize officially; "I am licensed to practice law in this state". wn

[4] #4 certify v. [endorse, indorse] guarantee as meeting a certain standard; "certified grade AAA meat". wn

[5] #5 certify v. declare legally insane. wn