/tə dɪˈnaʊns sʌmb æz ɪmˈpɑstər/ – Phrase
Definition: vạch mặt ai đó là tên lừa đảo.
A more thorough explanation: To denounce someone as an imposter means to publicly declare or accuse that person of pretending to be someone they are not, typically with the intention of deceiving others.
Example: The plaintiff sought to denounce the defendant as an imposter in the court proceedings.