authentic
adjective
[ ɔːˈθɛntɪk ]
• of undisputed origin and not a copy; genuine.
• "the letter is now accepted as an authentic document"
Similar:
genuine,
original,
real,
actual,
bona fide,
true,
veritable,
sterling,
attested,
undisputed,
rightful,
legitimate,
lawful,
legal,
valid,
echt,
the real McCoy,
the genuine article,
the real thing,
your actual,
kosher,
honest-to-goodness,
pukka,
dinkum,
simon-pure,
• (of a church mode) containing notes between the final (the principal note) and the note an octave higher.
Origin:
late Middle English: via Old French from late Latin authenticus, from Greek authentikos ‘principal, genuine’.
