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All answers having "Make an impression?" as clue:

3 Character Answers:

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APE



4 Character Answers:

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DENT

ETCH

SEAL



5 Character Answers:

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STAMP



7 Character Answers:

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IMPINGE



8 Character Answers:

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INSCRIBE

REGISTER



10 Character Answers:

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STRIKEHOME



13 Character Answers:

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LEAVEYOURMARK