Impostor
Definition 1 of 2
Pro Tip 1/3
Deception Intention
Impostor implies deliberate trickery, not accidental identity confusion. He acted as an impostor to access the exclusive event.
Pro Tip 2/3
Negative Connotation
Using 'impostor' suggests the person is dishonest and not trustworthy. The woman's accolades were stripped when she was exposed as an impostor.
Pro Tip 3/3
Expose Required
An impostor often requires another character or event to reveal their deceit. The documentary crew accidentally exposed the impostor.