verb cer·ti·fy \ˈsər-tə-ˌfī\

: to say officially that something is true, correct, or genuine

: to say officially that something or someone has met certain standards or requirements

: to say officially that someone is insane and in need of treatment


Full Definition of CERTIFY

transitive verb
:  to attest authoritatively: as
a :  confirm
b :  to present in formal communication
c :  to attest as being true or as represented or as meeting a standard
d :  to attest officially to the insanity of
:  to inform with certainty :  assure
:  to guarantee (a personal check) as to signature and amount by so indicating on the face
:  to recognize as having met special qualifications (as of a governmental agency or professional board) within a field <agencies that certify teachers>
cer·ti·fi·er \-ˌfī(-ə)r\ noun

Examples of CERTIFY

  1. A judge must certify the contract.
  2. The document has been certified by the court.
  3. The car dealer certifies each car before it is sold.
  4. Has your doctor been certified?

Origin of CERTIFY

Middle English certifien, from Anglo-French certefier, from Late Latin certificare, from Latin certus certain — more at certain
First Known Use: 14th century

Synonym Discussion of CERTIFY

certify, attest, witness, vouch mean to testify to the truth or genuineness of something. certify usually applies to a written statement, especially one carrying a signature or seal <certified that the candidate had met all requirements>. attest applies to oral or written testimony usually from experts or witnesses <attested to the authenticity of the document>. witness applies to the subscribing of one's own name to a document as evidence of its genuineness <witnessed the signing of the will>. vouch applies to one who testifies as a competent authority or a reliable person <willing to vouch for her integrity>.

Rhymes with CERTIFY

abide by, Adonai, alibi, alkali, amplify, apple-pie, argufy, assegai, azo dye, basify, beautify, butterfly, by-and-by, caddis fly, calcify, Chou En-lai, citify, clarify, classify, coalify, cockneyfy, codify, college try, cottage pie, crucify, cut-and-try, cutie-pie, DIY, damnify, damselfly, dandify, deify, densify, dignify, dobsonfly, do-or-die, dragonfly, dulcify, eagle eye, edify, evil eye, falsify, fancify, fortify, frenchify, fructify, gasify, Gemini, gentrify, glorify, goggle-eye, goldeneye, gratify, Haggai, harvest fly, hexerei, high and dry, hip and thigh, Hokusai, hook and eye, horrify, hoverfly, humble pie, Iceni, justify, kiss good-bye, lazy eye, lignify, liquefy, lithify, Lorelei, lullaby, Madurai, magnify, Malachi, Maracay, minify, modify, mollify, Molokai, Mordecai, mortify, multi-ply, multiply, mummify, mystify, nazify, notify, nullify, occupy, old school tie, on standby, on the fly, ossify, overbuy, overfly, overlie, pacify, Paraguay, passerby, peccavi, petrify, PPI, preachify, prettify, private eye, prophesy, purify, putrefy, qualify, quantify, ramify, rarefy, ratify, RBI, rectify, reify, res gestae, robber fly, runner's high, Russify, samurai, sanctify, satisfy, scarify, schwarmerei, semidry, set store by, shepherd's pie, shoofly pie, signify, simplify, Spanish fly, specify, speechify, stratify, stultify, stupefy, sweetie pie, Tenebrae, terrify, testify, tie-and-dye, tigereye, Trans Alai, tumble dry, typify, uglify, underlie, unify, Uruguay, Veneti, verify, versify, vilify, vinify, vitrify, vivify, weather eye, Windsor tie, xanthene dye, yuppify, zombify


verb cer·ti·fy \ˈsərt-ə-ˌfī\   (Medical Dictionary)

Medical Definition of CERTIFY

transitive verb
:  to attest authoritatively; especially :  to attest officially to the insanity of
:  to designate as having met the requirements to practice medicine or a particular medical specialty
intransitive verb
:  to attest by a certificate <five year program leading to examination by the American Board which certifies in that specialty—Bulletin of Meharry Medical College>
cer·ti·fi·able \ˌsər-tə-ˈfī-ə-bəl\ adjective
cer·ti·fi·ably \-blē\ adverb


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