attest

from WordNet (r) 3.0 (2006)
attest
    v 1: provide evidence for; stand as proof of; show by one's
         behavior, attitude, or external attributes; "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" [syn: {attest},
         {certify}, {manifest}, {demonstrate}, {evidence}]
    2: authenticate, affirm to be true, genuine, or correct, as in
       an official capacity; "I attest this signature"
    3: give testimony in a court of law [syn: {testify}, {attest},
       {take the stand}, {bear witness}]
    4: establish or verify the usage of; "This word is not attested
       until 1993"
    
from The Collaborative International Dictionary of English v.0.48
Attest \At"test"\, v. t. [imp. & p. p. {Attested}; p. pr. & vb.
   n. {Attesting}.] [L. attestari; ad + testari to bear witness:
   cf. F. attester.]
   1. To bear witness to; to certify; to affirm to be true or
      genuine; as, to attest the truth of a writing, a copy of
      record.
      [1913 Webster]

            Facts . . . attested by particular pagan authors.
                                                  --Addison.
      [1913 Webster]

   2. To give proof of; to manifest; as, the ruins of Palmyra
      attest its ancient magnificence.
      [1913 Webster]

   3. To call to witness; to invoke. [Archaic]
      [1913 Webster]

            The sacred streams which Heaven's imperial state
            Attests in oaths, and fears to violate. --Dryden.
      [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
Attest \At*test"\, n.
   Witness; testimony; attestation. [R.]
   [1913 Webster]

         The attest of eyes and ears.             --Shak.
   [1913 Webster]
    
from Moby Thesaurus II by Grady Ward, 1.0
108 Moby Thesaurus words for "attest":
      acknowledge, affirm, allege, and candle, announce, approve, argue,
      assert, assert under oath, asseverate, assure, authenticate, aver,
      avouch, avow, back, back up, be sponsor for, bear out,
      bear witness, bespeak, betoken, bolster, bond, book, breathe,
      buttress, certify, circumstantiate, confirm, connote, corroborate,
      countersecure, declare, demonstrate, denote, depone, depose,
      disclose, display, document, endorse, ensure, evidence, evince,
      exhibit, express, fortify, furnish evidence, give evidence,
      give indication of, go to show, guarantee, guaranty, illustrate,
      imply, indicate, insure, involve, kiss the book, manifest, mark,
      point to, probate, prove, ratify, reinforce, secure, set forth,
      show, show signs of, sign, sign for, signalize, signify,
      speak for itself, speak volumes, sponsor, stand behind,
      stand up for, strengthen, subscribe to, substantiate, suggest,
      support, sustain, swear, swear by bell, swear the truth, swear to,
      swear to God, swear to goodness, symptomatize, tell, tend to show,
      testify, undergird, undersign, underwrite, uphold, validate,
      verify, vouch, vouch for, vouchsafe, vow, warrant, witness

    

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