inauthentic
🇺🇸
/ˌɪnɔːˈθentɪk/
🇬🇧
/ˌɪnɔːˈθentɪk/
Something that is not genuine or real, and may be false or misleading.
The painting was found to be inauthentic, causing its value to plummet.
그림이 위조품으로 밝혀지면서 그 가치가 급격히 하락했다.