## Etymology
From in- ('not') + authentic, from Late Latin authenticus, from Ancient Greek authentikos ('original, genuine'), from authentes ('one who acts on his own authority').

## AI Etymology
inauthentic comes from in- ('not') + authentic, from Late Latin authenticus, from Ancient Greek authentikos ('original, genuine'), from authentes ('one who acts on his own authority'). Morphologically, the prefixed shape matters: the initial element belongs to the recorded formation and helps explain the modern form's surface analysis. In present English, the adjective sense is "not genuine or true to itself; fake or insincere", so the historical development ends in a clearly identifiable modern dictionary use. The same base also appears in related forms such as authentic, authenticity, and author, and in derivatives such as inauthentically and inauthenticity. Its semantic neighborhood includes fake, spurious, insincere, and false, which helps locate the modern sense without adding a separate etymological claim. The named historical forms include Ancient Greek authentikos and Ancient Greek authentes.

## Topics
- Describing Qualities
- Word Formation & Derivatives

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