Meanings
present singular third person certifies · participle present certifying · participle past certified · past certified
- transitivelawTo authenticate or verify in writing.
- archaictransitiveTo inform; to tell (a person) that something is true.
Our deeds do us three manners of service. First, they certify us that we are heirs of everlasting life, and that the Spirit of God, which is the earnest thereof, is in us.
1847, The Church of England Magazine, volume 23, page 239 - archaicreflexiveTo assure (oneself) of something; to ascertain.
After having certified himself of her own good health, he very kindly inquired about her mother and Miss Sophy […].
1751, [Tobias] Smollett, The Adventures of Peregrine Pickle […], volume (please specify |volume=I to IV), London: Harrison and Co., […], →OCLC
Synonyms & antonyms
verbTo attest that a product, service, organization, or person has met an official standard.
More synonyms by meaning
verbprovide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
- Old Frenchcertefier“confirm, assure, make certain”
- Englishcertify
From Old French certefier (“confirm, assure, make certain”). Compare French certifier.
More words from Old French
Full word history & related roots →Translations
Bulgarian удостоверявам, свидетелствам
- удостоверявам (udostoverjavam)to attest as to
- свидетелствам (svidetelstvam)to attest as to
- потвърждавам (potvărždavam)to attest as to
Chinese Mandarin 證明 /证明
- 證明 /证明 (zhèngmíng)to attest as to
Esperanto certigi
- certigito attest as to
Finnish todistaa
- todistaato attest as to
French certifier
- certifierto attest as to
German zertifizieren
- zertifizierento attest as to
Greek πιστοποιώ
- πιστοποιώ (pistopoió)to attest as to
Hebrew וידא
- וידא (vidé)to attest as to
Italian certificare
- certificareto attest as to
Japanese 認証する
- 認証する (ninshō suru)to attest as to
Korean 인증하다
- 인증하다 (injeunghada)to attest as to
Māori tiwhikete
- tiwhiketeto attest as to
Polish certyfikować
- certyfikowaćto attest that a product, service, organization, or person has met an official standard
Portuguese certificar
- certificarto attest as to
Romanian certifica
- certificato attest as to
Russian удостоверя́ть, удостове́рить
- удостоверя́ть (udostoverjátʹ)to attest as to
- удостове́рить (udostovéritʹ)to attest as to
- заверя́ть (zaverjátʹ)to attest as to
- заве́рить (zavéritʹ)to attest as to
- подтвержда́ть (podtverždátʹ)to attest as to
- подтверди́ть (podtverdítʹ)to attest as to
- свиде́тельствовать (svidételʹstvovatʹ)to attest as to
- освиде́тельствовать (osvidételʹstvovatʹ)to attest as to
- засвиде́тельствовать (zasvidételʹstvovatʹ)to attest as to
- сертифици́ровать (sertificírovatʹ)to attest that a product, service, organization, or person has met an official standard
Spanish certificar
- certificarto attest as to
Ukrainian сві́дчити, засві́дчувати
- сві́дчити (svídčyty)to attest as to
- засві́дчувати (zasvídčuvaty)to attest as to
- засві́дчити (zasvídčyty)to attest as to
- завіря́ти (zavirjáty)to attest as to
- заві́рити (zavíryty)to attest as to
- посві́дчувати (posvídčuvaty)to attest as to
- посві́дчити (posvídčyty)to attest as to
- сертифікува́ти (sertyfikuváty)to attest that a product, service, organization, or person has met an official standard
Rhymes & wordplay
Anagrams
Cite this entry
certify. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/certify
“certify.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/certify. Accessed November 2, 2026.
WatkinsX Dictionary, s.v. “certify,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/certify.
Source: certify on Wiktionary, CC BY-SA 4.0.