/ˌʌnɔːˈθɛntɪk/ – adjective
Definition: không xác thực, không chắc chắn, không đáng tin cậy.
A more thorough explanation: “Unauthentic” refers to something that is not genuine, not valid, or not in accordance with established rules or standards. It can also mean something that is fake, counterfeit, or fraudulent.
Example: The court ruled that the evidence presented by the defendant was unauthentic and therefore inadmissible.