English Reference
adjective

authentic

adj.
US /əˈθɛnɪk/ UK /ɔːθˈɛntɪk/ au·then·tic

  1. 01 B2 Upper Intermediate

    real and true; not a copy or a fake.

    of undisputed origin; genuine and not a counterfeit or copy.

    Simple

    The museum confirmed that the painting was an authentic work by Picasso.

    In context

    Experts spent months verifying the signature to ensure the document was an authentic historical record rather than a clever forgery.

  2. 02 B2 Upper Intermediate

    made or done in a traditional way so that it feels real.

    conforming to an original or traditional style, especially in cooking, art, or performance.

    Simple

    We went to a restaurant that serves authentic Italian pasta.

    In context

    The director insisted on using authentic period costumes to maintain the historical integrity of the film's nineteenth-century setting.

  3. 03 C2 Proficiency Technical Music

    a technical word used to describe certain types of scales or endings in music.

    designating a musical mode where the final is the lowest note, or a cadence where the dominant chord precedes the tonic.

    Simple

    The piece ends with an authentic cadence, making the music feel finished.

    In context

    The composition is written in an authentic mode, which gives the melody its distinctively grounded and traditional character.

    plagal
  4. 04 C1 Advanced ArchaicFormal

    having the power or authority to be believed.

    possessing authority or being worthy of trust and belief.

    Simple

    The judge provided an authentic interpretation of the old law.

    In context

    The scholar sought an authentic voice on the matter, consulting only those texts written by the original witnesses of the event.

The song is written by KT Tunstall , whose indie folk rock score lends an authentic edge to the story, complemented by Joe’s beats, under the musical direction of Michael John McCarthy.

The Guardian· 16 Aug 2026

Google’s 100 billion SynthID images and videos are just the tip of an iceberg that has already eclipsed authentic content on the Internet.

Ars Technica· 29 Jul 2026

From Middle English authentik, from Old French autentique, from Latin authenticus, from Ancient Greek αὐθεντικός (authentikós, “authentic, genuine”), from Ancient Greek αὐθέντης (authéntēs, “perpetrator, murderer, absolute ruler”). Doublet of effendi.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Ancient Greek αὐθέντης
Level C1 · Advanced
Frequency Common
Updated