#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 certify v. guarantee payment on; of checks. wn
#3 certify v. [license, licence] authorize officially; "I am licensed to practice law in this state". wn
#4 certify v. [endorse, indorse] guarantee as meeting a certain standard; "certified grade AAA meat". wn
#5 certify v. declare legally insane. wn
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