authentic

American  

[aw-then-tik] / ɔˈθɛn tɪk /

adjective

1. not false or copied; genuine; real.

   an authentic antique.

2. having an origin supported by unquestionable evidence; authenticated; verified.

   an authentic document of the Middle Ages;

   an authentic work of the old master.

3. representing one’s true nature or beliefs; true to oneself or to the person identified.

   a story told in the authentic voice of a Midwestern farmer;

   a senator’s speech that sounded authentic.

4. entitled to acceptance or belief because of agreement with known facts or experience; reliable; trustworthy.

   an authentic report on poverty in Africa.

5. Law. executed with all due formalities.

   an authentic deed.

6. Music.

   1. (of a church mode) having a range extending from the final to the octave above.

   2. (of a cadence) consisting of a dominant harmony followed by a tonic.

7. Obsolete. authoritative.

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authentic British  

/ ɔːˈθɛntɪk, ˌɔːθɛnˈtɪsɪtɪ /

adjective

1. of undisputed origin or authorship; genuine

   an authentic signature

2. accurate in representation of the facts; trustworthy; reliable

   an authentic account

3. (of a deed or other document) duly executed, any necessary legal formalities having been complied with

4. music

   1. using period instruments and historically researched scores and playing techniques in an attempt to perform a piece as it would have been played at the time it was written

   2. ( in combination )

      an authentic-instrument performance

5. music Compare plagal

   1. (of a mode as used in Gregorian chant) commencing on the final and ending an octave higher

   2. (of a cadence) progressing from a dominant to a tonic chord

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Related Words

Authentic, genuine, real, veritable share the sense of actuality and lack of falsehood or misrepresentation. Authentic carries the connotation of authoritative confirmation that things or people are what they are claimed or appear to be: an authentic Rembrandt sketch; an authentic smile. Genuine refers to objects or persons having the characteristics or source claimed or implied: a genuine ivory carving. Real, the most general of these terms, refers to innate or actual—as opposed to ostensible—nature or character: In real life, plans often miscarry. A real diamond will cut glass. Veritable, derived from the Latin word for truth, suggests the general truthfulness but not necessarily the literal or strict correspondence with reality of that which it describes; it is often used metaphorically: a veritable wizard of finance.

Other Word Forms

• authentically adverb
• authenticity noun
• nonauthentic adjective
• quasi-authentic adjective
• quasi-authentically adverb
• unauthentic adjective

Etymology

Origin of authentic

First recorded in 1300–50; from Late Latin authenticus “coming from the author, genuine” (also in the neuter, as a noun: “original document, the original”), from Greek authentikós “original, primary, at first hand,” equivalent to authént(ēs) “perpetrator,” literally, “one who does things oneself” ( aut- aut- + -hentēs “doer”) + -ikos -ic

Explanation

The adjective authentic describes something that is real or genuine and not counterfeit. Be careful when you are buying jewelry or watches. If you are going to buy a diamond ring, you want an authentic diamond and not glass. That would be authentic glass but a fake diamond! In addition to describing something real, the adjective authentic describes something reliable, based on fact, and believable. If you have to write a research paper for school, be sure to use authentic facts and figures. The teacher is sure to check if you write, "My little sister told me that the Eiffel Tower is about 10,000 feet high," when in fact it's 1,063 feet tall.

Example Sentences

Its office features a replica of the Apollo 11 command module and an authentic Enigma encryption machine from 1943—the German device cracked by Allied codebreakers including celebrated British mathematician Alan Turing.

From The Wall Street Journal • Apr. 23, 2026

Graham Burnett, a history professor at Princeton University, sees "the dawning of an authentic movement," similar to the birth of the environmental movement in the 1960s, which led to landmark environmental protections.

From Barron's • Apr. 22, 2026

“The word authentic is overused, but every time he talks about his love for this state, for his family and wanting to make California work for everyone, it comes across incredibly sincere,” Thoma said.

From Los Angeles Times • Apr. 21, 2026

These personas can appear authentic, adopt local language and tone, and interact in ways that feel natural to other users.

From Science Daily • Apr. 20, 2026

I carefully peeled back the tape on Caitlin's gift and could not believe what was beneath the festive paper: an authentic, genuine Reebok T-shirt!

From "I Will Always Write Back" by Caitlin Alifirenka and Martin Ganda

Related Words

• accurate
• authoritative
• convincing
• credible
• legitimate
• original
• pure
• reliable
• true
• trustworthy