from The American Heritage® Dictionary of the English Language, 5th Edition.

  • intransitive verb To affirm to be correct, true, or genuine.
  • intransitive verb To certify by signature or oath.
  • intransitive verb To certify in an official capacity.
  • intransitive verb To supply or be evidence of: synonym: indicate.
  • intransitive verb Linguistics To confirm the existence, usage, or currency of (a word, for example), as by being recorded in writing.
  • intransitive verb To put under oath.
  • intransitive verb To bear witness; give testimony.
  • noun Archaic Attestation.

from The Century Dictionary.

  • noun Witness; testimony; attestation.
  • To bear witness to; certify; affirm to be true or genuine; declare the truth of in words or writing; especially, affirm in an official capacity: as, to attest the truth of a writing; to attest a copy of a document.
  • To make evident; vouch for; give proof or evidence of; manifest.
  • To call to witness; invoke as knowing or conscious.
  • To put upon oath; swear in.
  • To bear witness; make an attestation: with to: as, to attest to a statement or a document.

from the GNU version of the Collaborative International Dictionary of English.

  • transitive verb To bear witness to; to certify; to affirm to be true or genuine.
  • transitive verb To give proof of; to manifest.
  • transitive verb Archaic To call to witness; to invoke.
  • noun rare Witness; testimony; attestation.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • verb To affirm to be correct, true, or genuine.
  • verb To certify by signature or oath
  • verb To certify in an official capacity.
  • verb To supply or be evidence of
  • verb To put under oath.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • verb give testimony in a court of law
  • verb provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes
  • verb authenticate, affirm to be true, genuine, or correct, as in an official capacity
  • verb establish or verify the usage of


from The American Heritage® Dictionary of the English Language, 4th Edition

Latin attestārī : ad-, ad- + testārī, to be witness (from testis, witness; see trei- in Indo-European roots).

from Wiktionary, Creative Commons Attribution/Share-Alike License

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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