authentic

• POS: Adjective
• HYPHEN: au=then=tic

CIDE DICTIONARY

authentic, a. [OE. autentik, OF. autentique, F. authentique, L. authenticus coming from the real author, of original or firsthand authority, from Gr. , fr. suicide, a perpetrator or real author of any act, an absolute master; a'yto`s self + a form "enths (not found), akin to L. sons and perh. orig. from the p. pr. of e'i^nai to be, root as, and meaning the one it really is. See Am, Sin, n., and cf. Effendi.].

•  Having a genuine original or authority, in opposition to that which is false, fictitious, counterfeit, or apocryphal; being what it purports to be; genuine; not of doubtful origin; real; as, an authentic paper or register.  [1913 Webster]

  "To be avenged
  On him who had stole Jove's authentic fire."  [1913 Webster]
•  Authoritative.  Milton.  [1913 Webster]
•  Of approved authority; true; trustworthy; credible; as, an authentic writer; an authentic portrait; authentic information.  [1913 Webster]
•  Vested with all due formalities, and legally attested.  [1913 Webster]
•  Having as immediate relation to the tonic, in distinction from plagal, which has a correspondent relation to the dominant in the octave below the tonic.  [1913 Webster]

  "It may be said, however, that some writers use authentic (as, an authentic document) in the sense of “produced by its professed author, not counterfeit.”"  [1913 Webster]

  "A genuine book is that which was written by the person whose name it bears, as the author of it. An authentic book is that which relates matters of fact as they really happened. A book may be genuine without being, authentic, and a book may be authentic without being genuine."  [1913 Webster]

Syn. -- Authentic, Genuine.

authentic, n. 

 An original (book or document).  Fuller.  [1913 Webster]

OXFORD DICTIONARY

authentic, adj.
1 a of undisputed origin; genuine. b reliable or trustworthy.
2 Mus. (of a mode) containing notes between the final and an octave higher (cf. PLAGAL).

Derivative

authentically adv. authenticity n.

Etymology

ME f. OF autentique f. LL authenticus f. Gk authentikos principal, genuine

THESAURUS

authentic

Christian, aboveboard, absolute, accepted, accurate, actual, adducible, admissible, approved, attestative, attestive, authoritative, avant-garde, based on, bona fide, candid, canonical, card-carrying, cathedral, certain, circumstantial, cognizable, conclusive, conventional, convincing, correct, creative, credible, cumulative, customary, damning, de facto, decisive, dependable, determinative, dinkum, documentary, documented, evangelical, evidential, evidentiary, ex cathedra, ex parte, eye-witness, factual, fair and square, faithful, final, firm, firsthand, following the letter, for real, founded on, foursquare, fresh, genuine, good, good-faith, grounded on, hearsay, historical, honest, honest-to-God, imaginative, implicit, inartificial, incontrovertible, indicative, indisputable, indubitable, irrefutable, irresistible, knowable, lawful, legitimate, lifelike, literal, magisterial, material, natural, naturalistic, new, novel, nuncupative, of the faith, official, on the level, on the square, on the up-and-up, open, open and aboveboard, original, orthodox, orthodoxical, overwhelming, positive, presumptive, probative, proper, pukka, pure, questionless, real, realistic, received, recognizable, reliable, revolutionary, right, rightful, scriptural, significant, simon-pure, simple, sincere, single-hearted, solid, sound, square, square-dealing, square-shooting, standard, sterling, straight, straight-shooting, substantial, suggestive, sure, sure-enough, symptomatic, telling, textual, traditional, traditionalistic, true, true to life, true to nature, true to reality, true-blue, trustworthy, trusty, unadulterated, unaffected, unalloyed, unassumed, unassuming, uncolored, unconcocted, uncopied, uncounterfeited, undeniable, underived, undisguised, undisguising, undisputed, undistorted, undoubted, unexaggerated, unfabricated, unfanciful, unfeigned, unfeigning, unfictitious, unflattering, unimagined, unimitated, uninvented, unique, unpretended, unpretending, unqualified, unquestionable, unromantic, unsimulated, unspecious, unsynthetic, unvarnished, up-and-up, valid, verbal, verbatim, veridical, verisimilar, veritable, very, weighty, word-for-word

ROGET THESAURUS

authentic

Existence

N existence, being, entity, ens, esse, subsistence, reality, actuality, positiveness, fact, matter of fact, sober reality, truth, actual existence, presence, coexistence, stubborn fact, hard fact, not a dream, no joke, center of life, essence, inmost nature, inner reality, vital principle, ontology, existing, existent, under the sun, in existence, extant, afloat, afoot, on foot, current, prevalent, undestroyed, real, actual, positive, absolute, true, substantial, substantive, self-existing, self-existent, essential, well-founded, well-grounded, unideal, unimagined, not potential, authentic, actually, in fact, in point of fact, in reality, indeed, de facto, ipso facto, ens rationis, ergo sum cogito, thinkest thou existence doth depend on time?.

Certainty

N certainty, necessity, certitude, surety, assurance, dead certainty, moral certainty, infallibleness, infallibility, reliability, indubitableness, inevitableness, unquestionableness, gospel, scripture, church, pope, court of final appeal, res judicata, ultimatum positiveness, dogmatism, dogmatist, dogmatizer, doctrinaire, bigot, opinionist, Sir Oracle, ipse dixit, fact, positive fact, matter of fact, fait accompli, certain, sure, assured, solid, well-founded, unqualified, absolute, positive, determinate, definite, clear, unequivocal, categorical, unmistakable, decisive, decided, ascertained, inevitable, unavoidable, avoidless, ineluctable, unerring, infallible, unchangeable, to be depended on, trustworthy, reliable, bound, unimpeachable, undeniable, unquestionable, indisputable, incontestable, incontrovertible, indubitable, irrefutable, conclusive, without power of appeal, indubious, without doubt, beyond a doubt, without a shade or shadow of doubt, without question, beyond question, past dispute, clear as day, beyond all question, beyond all dispute, undoubted, uncontested, unquestioned, undisputed, questionless, doubtless, authoritative, authentic, official, sure as fate, sure as death and taxes, sure as a gun, evident, self-evident, axiomatic, clear, clear as day, clear as the sun at noonday, certainly, for certain, certes, sure, no doubt, doubtless, and no mistake, flagrante delicto, sure enough, to be sure, of course, as a matter of course, a coup sur, to a certainty, in truth, at any rate, at all events, without fail, coute que coute, coute qu'il coute, whatever may happen, if the worst come to the worst, come what may, happen what may, come what will, sink or swim, rain or shine, cela va sans dire, there is no question, no question, not a shadow of doubt, there is not a shadow of doubt, the die is cast, facts are stubborn things.

Truth

N truth, fact, reality, plain fact, plain matter of fact, nature, truth, verity, gospel, gospel truth, God's honest truth, orthodoxy, authenticity, veracity, correctness, correctitude, accuracy, exactitude, exactness, preciseness, precision, delicacy, rigor, mathematical precision, punctuality, clockwork precision, conformity to rule, nicety, orthology, ipsissima verba, realism, plain truth, honest truth, sober truth, naked truth, unalloyed truth, unqualified truth, stern truth, exact truth, intrinsic truth, nuda veritas, the very thing, not an illusion, real Simon Pure, unvarnished tale, unvarnished truth, the truth the whole truth and nothing but the trut, just the thing, real, actual, veritable, true, right, correct, certain, substantially true, categorically true, definitively true, true to the letter, true as gospel, unimpeachable, veracious, unreconfuted, unconfuted, unideal, unimagined, realistic, exact, accurate, definite, precise, well-defined, just, just so, so, strict, severe, close, literal, rigid, rigorous, scrupulous, religiously exact, punctual, mathematical, scientific, faithful, constant, unerring, curious, particular, nice, delicate, fine, clean-cut, clear-cut, verified, empirically true, experimentally verified, substantiated, proven (demonstrated), rigorously true, unquestionably true, true by definition, genuine, authentic, legitimate, orthodox, official, ex officio, pure, natural, sound, sterling, unsophisticated, unadulterated, unvarnished, unalloyed, uncolored, in its true colors, pukka, well-grounded, well founded, solid, substantial, tangible, valid, undistorted, undisguised, unaffected, unexaggerated, unromantic, unflattering, truly, verily, indeed, really, in reality, with truth, certainly, actually, in effect, exactly, ad amussim, verbatim, verbatim et literatim, word for word, literally, literatim, totidem vervis, sic, to the letter, chapter and verse, ipsissimis verbis, ad unguem, to an inch, to a nicety, to a hair, to a tittle, to a turn, to a T, au pied de la lettre, neither more nor less, in every respect, in all respects, sous tous les rapports, at any rate, at all events, strictly speaking, the truth is, the fact is, rem acu tetigisti, en suivant la verite, ex facto jus oritur, la verita e figlia del empo, locos y ninos dicen la verdad, crazy people and children tell the truth, nihil est veritatis luce dulcius, veritas nunquam perit, veritatem dies aperit, the truth, the whole truth, and nothing but the truth, just the facts, ma'am, just the facts.