Impostor/ɪmˈpɑːstər/ Definition 1 of 2Pro Tip 1/3Deception Intention Impostor implies deliberate trickery, not accidental identity confusion. He acted as an impostor to access the exclusive event. Pro Tip 2/3Negative 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 3/3Expose Required An impostor often requires another character or event to reveal their deceit. The documentary crew accidentally exposed the impostor.