not genuine; that you cannot believe or rely on opposite authentic
NAmE//ˌɪnɔθɛnˈtɪsət̮i//, NAmE//ˌɪnɔθənˈtɪsət̮i//
noun [uncountable]See inauthentic in the Oxford Advanced Learner's DictionaryCheck pronunciation: inauthentic
Definition of inauthentic adjective from the Oxford Advanced American Dictionary