emulator
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/ˈemjuleɪtər/
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/ˈemjuleɪtə(r)/
someone who copies the actions or behavior of another person they admire
She was an emulator of her favorite actress, always trying to imitate her style.
a device or software that allows one computer system to act like another
The emulator allowed the game, designed for a different console, to be played on a PC.