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All answers having "Idle" as clue:

3 Character Answers:

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RHO



4 Character Answers:

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ERIC

LAZE

LOAF

LOLL

MOON

VAIN



5 Character Answers:

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INERT

NOTON

SLACK



6 Character Answers:

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ATREST

OTIOSE

PUTTER

RENOWN

UNUSED

WANDER



7 Character Answers:

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DORMANT

JOBLESS

LOAFING



8 Character Answers:

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FAINEANT

INACTIVE

KILLTIME

TICKOVER



9 Character Answers:

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ATLEISURE

ATLIBERTY

LIEAROUND

OUTOFWORK

SHIFTLESS



11 Character Answers:

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BETWEENJOBS

ONTHESTREET



12 Character Answers:

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NOTHINGDOING