Attest

• POS: Verb (transitive)
• HYPHEN: at=test

CIDE DICTIONARY

Attest, v. t. [L. attestari; ad + testari to bear witness: cf. F. attester.].

•  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."  [1913 Webster]
•  To give proof of; to manifest; as, the ruins of Palmyra attest its ancient magnificence.  [1913 Webster]
•  To call to witness; to invoke.  [1913 Webster]

  "The sacred streams which Heaven's imperial state
  Attests in oaths, and fears to violate."  [1913 Webster]

Attest, n. 

 Witness; testimony; attestation.  [1913 Webster]
"The attest of eyes and ears."  [1913 Webster]

OXFORD DICTIONARY

Attest, v.
1 tr. certify the validity of.
2 tr. enrol (a recruit) for military service.
3 intr. (foll. by to) bear witness to.
4 intr. enrol oneself for military service.

Derivative

attestable adj. attestor n.

Etymology

F attester f. L attestari (as AD-, testis witness)

THESAURUS

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

ROGET THESAURUS

Attest

Promise

VB promise, give a promise, undertake, engage, make an engagement, form an engagement, enter into an engagement, enter on an engagement, bind oneself, tie oneself, pledge oneself, commit oneself, take upon oneself, vow, swear, give one's word, pass one's word, pledge one's word, plight one's word, give one's honor, pass one's honor, pledge one's honor, plight one's honor, give credit, pass credit, pledge credit, plight credit, give troth, pass troth, pledge troth, plight troth, betroth, plight faith, assure, warrant, guarantee, covenant, attest, hold out an expectation, contract an obligation, become bound to, become sponsor for, answer for, be answerable for, secure, give security, underwrite, adjure, administer an oath, put to one's oath, swear a witness.

Evidence

VB be evidence, evince, show, betoken, tell of, indicate, imply, involve, argue, bespeak, breathe, have weight, carry weight, tell, speak volumes, speak for itself, rest upon, depend upon, repose on, bear witness, give evidence, testify, depose, witness, vouch for, sign, seal, undersign, set one's hand and seal, sign and seal, deliver as one's act and deed, certify, attest, acknowledge, make absolute, confirm, prove (demonstrate), indorse, countersign, corroborate, support, ratify, bear out, uphold, warrant, adduce, attest, cite, quote, refer to, appeal to, call, call to witness, bring forward, bring into court, allege, plead, produce witnesses, confront witnesses, place into evidence, mark into evidence, collect evidence, bring together evidence, rake up evidence, experiment, have a case, make out a case, establish, authenticate, substantiate, verify, make good, quote chapter and verse, bring home to, bring to book, be evidence, evince, show, betoken, tell of, indicate, imply, involve, argue, bespeak, breathe, have weight, carry weight, tell, speak volumes, speak for itself, rest upon, depend upon, repose on, bear witness, give evidence, testify, depose, witness, vouch for, sign, seal, undersign, set one's hand and seal, sign and seal, deliver as one's act and deed, certify, attest, acknowledge, make absolute, confirm, prove (demonstrate), indorse, countersign, corroborate, support, ratify, bear out, uphold, warrant, adduce, attest, cite, quote, refer to, appeal to, call, call to witness, bring forward, bring into court, allege, plead, produce witnesses, confront witnesses, place into evidence, mark into evidence, collect evidence, bring together evidence, rake up evidence, experiment, have a case, make out a case, establish, authenticate, substantiate, verify, make good, quote chapter and verse, bring home to, bring to book.

Affirmation

VB assert, make an assertion, have one's say, say, affirm, predicate, declare, state, protest, profess, put forth, put forward, advance, allege, propose, propound, enunciate, broach, set forth, hold out, maintain, contend, pronounce, pretend, depose, depone, aver, avow, avouch, asseverate, swear, make oath, take one's oath, make an affidavit, swear an affidavit, put in an affidavit, take one's Bible oath, kiss the book, vow, vitam impendere vero, swear till one is black in the face, swear till one is blue in the face, swear till all's blue, be sworn, call Heaven to witness, vouch, warrant, certify, assure, swear by bell book and candle, swear by, insist upon, take one's stand upon, emphasize, lay stress on, assert roundly, assert positively, lay down, lay down the law, raise one's voice, dogmatize, have the last word, rap out, repeat, reassert, reaffirm, announce, acknowledge, attest, adjure.

Indication

VB indicate, be the sign, of, denote, betoken, argue, testify, bear the impress, of, connote, connotate, represent, stand for, typify, symbolize, put an indication, put a mark, note, mark, stamp, earmark, blaze, label, ticket, docket, dot, spot, score, dash, trace, chalk, print, imprint, impress, engrave, stereotype, make a sign, signalize, underscore, give a signal, hang out a signal, beckon, nod, wink, glance, leer, nudge, shrug, tip the wink, gesticulate, raise the finger, hold up the finger, raise the hand, hold up the hand, saw the air, suit the action to the word, wave a banner, unfurl a banner, hoist a banner, hang out a banner, wave the hand, wave a kerchief, give the cue, show one's colors, give an alarm, sound an alarm, beat the drum, sound the trumpets, raise a cry, sign, seal, attest, underline, call attention to, give notice.