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All answers having "Facilitate" as clue:

3 Character Answers:

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AID

OIL



4 Character Answers:

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ABET

EASE

HELP

PAVE



5 Character Answers:

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SPEED



6 Character Answers:

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ENABLE

GREASE



8 Character Answers:

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EXPEDITE



10 Character Answers:

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PAVETHEWAY