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authentic

au·then·tic

authentic

 
pronunciation:
aw then tihk
part of speech: adjective
definition 1: real, genuine, or valid.
The famous signature on the document proved to be authentic.
 
synonyms:
bona fide, genuine, honest-to-goodness, real, true, veritable
antonyms:
apocryphal, bogus, fake, inauthentic, phony, spurious, unauthentic
similar words:
actual, honest, natural, simon-pure, sincere, substantive, valid, veracious
definition 2: in conformance with the known facts; authoritative.
Archeologists have struggled to produce an authentic interpretation of the symbols.
synonyms:
authoritative, reliable
antonyms:
apocryphal, inauthentic
similar words:
accepted, approved, genuine, official, valid
derivation: authentically (adv.)