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All answers having "Derision" as clue:

3 Character Answers:

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PIG



4 Character Answers:

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IRON

NEAT

RIOT



5 Character Answers:

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SCORN



6 Character Answers:

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AFRESH

ENSIGN

FLAUNT



7 Character Answers:

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MOCKERY

SARCASM

YOUNGER



8 Character Answers:

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PIPEDOWN

RIDICULE