certify B2 Topic:Law & Government US /ˈsɝ.tɪ.faɪ/ UK /ˈsɜː.tɪ.faɪ/ See IPA manual Freq #31419 Meanings 1 verb To state officially that something has met a required standard. These blankets have been certified as fireproof. 2 verb To give official permission for someone to do a job. She is certified to teach in three states. 3 verb To declare formally that something is true. The doctor certified that the patient was fit to work. Thesaurus Synonyms 1 verb · to state officially that... approveattestconfirmendorse 2 verb · to give official permission... license 3 verb · to declare formally that... show Word family Forms certifiedcertifiescertifying Derived forms certifiabilitycertifiabledecertifymiscertifyovercertifyprecertifyrecertifyself-certifyuncertify Etymology AI details From Old French certefier (“confirm, assure, make certain”). Compare French certifier. *dʰeh₁- Proto-Indo-European View etymology graph -> Topics Law & Government Actions & Processes External links Cambridge Dictionary Wiktionary Google Images # certify **Type:** Word **Level:** B2 **Part of speech:** verb **IPA (US):** /ˈsɝ.tɪ.faɪ/ **IPA (UK):** /ˈsɜː.tɪ.faɪ/ **Frequency rank:** 31419 ## Meanings 1. To state officially that something has met a required standard. 2. To give official permission for someone to do a job. 3. To declare formally that something is true. ## Examples - These blankets have been certified as fireproof. - She is certified to teach in three states. - The doctor certified that the patient was fit to work. ## Derived Forms - certifiability - certifiable - decertify - miscertify - overcertify - precertify - recertify - self-certify - uncertify ## Roots and Affixes - Root: *dʰeh₁- ## Etymology From Old French certefier (“confirm, assure, make certain”). Compare French certifier. ## AI Etymology certify is a verb. It is from Old French certefier (“confirm, assure, make certain”). Compare French certifier. Historical forms in the chain include *dʰeh₁- (Proto-Indo-European). Current senses include to state officially that something has met a required standard, to give official permission for someone to do a job, and to declare formally that something is true. Derived forms include certifiability, certifiable, decertify, miscertify, and overcertify. ## Topics - Law & Government - Actions & Processes markdown