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All answers having "Sentimental" as clue:

4 Character Answers:

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SOFT



5 Character Answers:

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GUSHY

MUSHY

SAPPY

SOPPY

SOUPY



6 Character Answers:

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CHEESY

DRIPPY

SLUSHY



7 Character Answers:

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CONCEAL

MAUDLIN

MAWKISH



8 Character Answers:

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DEWYEYED

ROMANTIC



9 Character Answers:

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MISTYEYED

SCHMALTZY



10 Character Answers:

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MOONSTRUCK

SOFTBOILED