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All answers having "Settles" as clue:

4 Character Answers:

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ENDS

PAYS

SAGS



5 Character Answers:

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CALMS

LIGTS

NESTS

RESTS

SEATS

SINKS



6 Character Answers:

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CLEARS

LIGHTS

LODGES



7 Character Answers:

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ADJUSTS

DECIDES

LOCATES

SEDATES



8 Character Answers:

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IRONSOUT

RESOLVES

SUBSIDES



9 Character Answers:

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COLONIZES

SQUARESUP