Attest

//əˈtɛst// verb

verb ·Common ·High school level

Definitions

Verb
  1. 1
    To affirm to be correct, true, or genuine. transitive

    "When will the appraiser attest the date of the painting?"

  2. 2
    authenticate, affirm to be true, genuine, or correct, as in an official capacity wordnet
  3. 3
    To certify by signature or oath. transitive

    "You must attest your will in order for it to be valid."

  4. 4
    establish or verify the usage of wordnet
  5. 5
    To certify in an official capacity. transitive
Show 5 more definitions
  1. 6
    provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes wordnet
  2. 7
    To supply or be evidence of. ambitransitive

    "Her fine work attested her ability."

  3. 8
    give testimony in a court of law wordnet
  4. 9
    To put under oath. transitive
  5. 10
    To call to witness; to invoke. obsolete, transitive

    "The sacred streams which Heaven's imperial state / Attests in oaths, and fears to violate."

Synonyms

All synonyms
bear witnesstestifyaccreditacknowledgeadjudgeadmission

Example

More examples

"The fingerprints on the knife attest to her guilt."

Etymology

PIE word *tréyes Borrowed from Middle French attester, from Latin attestor (“to witness to, bear witness”), from at-, combining form of ad (“to”) + testor (“to bear witness”), from testis (“a witness”).

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.