impostor
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/ɪmˈpɑːstər/
🇬🇧
/ɪmˈpɒstə(r)/
Someone who pretends to be another person to deceive others.
The detective discovered that the man was an impostor, pretending to be a doctor to gain access to the hospital.
侦探发现那个男人是个冒名顶替者,假装成医生以获得进入医院的机会。