nonauthenticity

uncountable

The state or condition of being nonauthentic.

Japanese Meaning

本物でない状態、真正性がない状態

Curators were troubled by the nonauthenticity of the ancient vase, which undermined its historical value.

学芸員たちは、その古代の壺の真正性の欠如に困惑し、それが歴史的価値を損なっていた。

Sense（1）

The state or condition of being nonauthentic.