Pretending to be someone else, either for entertainment or to deceive people for illegal purposes.
From Latin 'in-' (into) plus 'persona' (mask or character), originally meaning to act a role in theater. Over time it came to mean pretending to be a real person, not just a theatrical character.
Impersonating a police officer or government official is illegal because it undermines public trust and authority, but impersonating celebrities for comedy or entertainment is generally fine—context matters!
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