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Webster 1913 Edition

Authenticalness

Au-then-tic-al-ness

,
Noun.
The quality of being authentic; authenticity.
[R.]
Barrow.

Webster 1828 Edition

Authenticalness

AUTHEN'TICALNESS

,
Noun.
The quality of being authentic; genuineness; the quality of being of good authority; authenticity.
[The latter word is generally used.]

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