certifying

1. provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributesExamples: "His high fever attested to his illness"; "The buildings in Rome manifest a high level of architectural sophistication"; "This decision demonstrates his sense of fairness"Synonyms: attest, certify, demonstrate, evidence, manifest

2. guarantee payment on; of checksSynonyms: certify

3. authorize officiallyExamples: "I am licensed to practice law in this state"Synonyms: certify, licence, licenseAntonyms: decertify

4. guarantee as meeting a certain standardExamples: "certified grade AAA meat"Synonyms: certify, endorse, indorse

5. declare legally insaneSynonyms: certify