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