authenticity

authenticity — noun

1. the fact that something is genuinely what people say it is, rather than a copy,

1.nounC1
Definition

the fact that something is genuinely what people say it is, rather than a copy, a fake, or a pretence.

Example

Dr. Nia used a small chemical test to confirm the authenticity of the gold coin.

authenticity of + concrete object

Critics praised the young singer for the raw emotional authenticity of her debut album.

emotional authenticity of + creative work

Common collocations
  • test the authenticity of
  • verify the authenticity of
  • question the authenticity of
  • ring of authenticity
  • sense of authenticity
Synonyms
  • genuineness

    close synonym, slightly less formal; often used for personal qualities like sincerity

  • validity

    focuses on something being legally or logically acceptable, not on whether it is real

  • realness

    informal; usually used about feelings or personal style rather than objects

Antonyms
  • fakeness

    informal opposite, often used about people or behaviour

  • falsity

    more formal; the quality of being untrue, especially about claims or statements

Grammar Patterns

authenticity of [noun]

Usage Note

Almost always uncountable and frequently appears in the fixed pattern 'the authenticity of [something]'. The 'something' is usually an object whose origin can be tested — for example a painting actually being painted by Van Gogh, or a coin coming from a known mint — or a quality that can be felt, such as a person's emotions actually being experienced rather than performed.

Common Mistakes

She showed many authenticities in her speech.
She showed great authenticity in her speech.
uncountable; do not pluralise or use with 'a'.
The expert proved the authenticity for the painting.
The expert proved the authenticity of the painting.
the fixed preposition is 'of', not 'for'.

Word family

Synonym discussion

Sense: noun/1

All four words describe something being 'really what it appears to be', but they differ in focus. 'Authenticity' is the broadest and most common, used both for physical things (a painting, a coin) and for personal or cultural qualities (emotions, a village, a performance). 'Genuineness' overlaps heavily but tends to describe people and feelings — we more often say 'the genuineness of her smile' than 'the genuineness of the coin'. 'Validity' is about whether something meets a standard or rule (a valid passport, a valid argument), not whether it is real or fake. 'Legitimacy' is about whether something is allowed by law, custom, or moral right. Compare: 'the authenticity of the king's crown' (is it the real crown?) versus 'the legitimacy of the king's rule' (does he have the right to rule?).

authenticity ↗genuinenessvalidity ↗legitimacy

Common collocations

Nouns

  • lack of authenticity
  • sense of authenticity
  • ring of authenticity
  • mark of authenticity
  • certificate of authenticity

Phrases

  • test the authenticity of
  • verify the authenticity of
  • question the authenticity of
  • prove the authenticity of
  • doubt the authenticity of

Prepositions

  • authenticity of

Etymology

GreekLate LatinOld FrenchMiddle EnglishEnglish

Comes from the adjective 'authentic', which entered English in the 14th century from Old French 'autentique', borrowed from Late Latin 'authenticus' and ultimately from Greek 'authentikos', meaning 'original' or 'coming from the author themselves'. The noun ending '-ity' was added to express the abstract quality of being authentic, following the same pattern as 'reality', 'identity', and 'sincerity'.