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Definition of authentic:

  1. An original ( book or document).
  2. Authoritative.
  3. 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.
  4. 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.
  5. Of approved authority; true; trustworthy; credible; as, an authentic writer; an authentic portrait; authentic information.
  6. Vested with all due formalities, and legally attested.


sure, credible, bona fide, dinkum &amp, echt, objective, perfect, physical, indubitable, faithful, trusty, strict, apparent, New Zealand, current, pukka, kosher, unquestionable, study at, specific, unerring, valid, certifiable, reliable, sure-enough, regular, convincing, authoritative, accepted, accredited, trustworthy, authorized, undoubted, realistic, good, veritable, received, genuine, dependable, real-world, legitimate.

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