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"copycat" is also used as a crossword clue. If that's what you saw, the answer is often emulator (8 letters).
Definitions
someone who copies the words or behavior of another
Word origin
Originally American English, from copy + cat (“a former derogatory term for a person”).
Used in a sentence
“And in it all they are merely copy-cats—servile followers of the aristocratic creed, but without the genuine prestige of the old-time nobilities.”
“a copycat strangler”
“copycat crime”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Imitator”7 letters
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