authentic

Syllabification: (au·then·tic)

Pronunciation: /ôˈTHentik/

(abbreviation: auth.)

Definition of authentic

1of undisputed origin; genuine:the letter is now accepted as an authentic document authentic 14th-century furniture
made or done in the traditional or original way, or in a way that faithfully resembles an original:the restaurant serves authentic Italian meals every detail of the movie was totally authentic
based on facts; accurate or reliable:an authentic depiction of the situation
(in existentialist philosophy) relating to or denoting an emotionally appropriate, significant, purposive, and responsible mode of human life.

2 Music (of a church mode) comprising the notes lying between the principal note or final and the note an octave higher. Compare with plagal.

Derivatives

late Middle English: via Old French from late Latin authenticus, from Greek authentikos 'principal, genuine'

Definition of authentic in the British & World English dictionary