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Synonyms

authenticity

American  
[aw-then-tis-i-tee, aw-thuhn-] / ˌɔ θɛnˈtɪs ɪ ti, ˌɔ θən- /

noun

  1. the quality of being authentic; genuineness.

Other Word Forms

  • nonauthenticity noun
  • unauthenticity noun

Etymology

Origin of authenticity

First recorded in 1650–60; authentic + -ity

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The DOJ confirmed the authenticity of the breach and published material, according to the Reuters report.

From Salon • Mar. 27, 2026

It was only in 2025, while preparing an exhibition, that Parich managed to trace the hat's journey and confirm its authenticity.

From Barron's • Mar. 26, 2026

These include invisible watermarks embedded directly into images and cryptographic signatures linked to the technologist at the time of image capture, which can help verify authenticity.

From Science Daily • Mar. 26, 2026

These analytics measure the authenticity of investments, whether they achieve investors’ nonfinancial objectives, and whether they yield promised rates of return.

From The Wall Street Journal • Mar. 16, 2026

I pat his arm and whisper thank you, infusing it with as much authenticity as I can.

From "Saints and Misfits" by S.K. Ali

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.