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All answers having "Glower" as clue:

3 Character Answers:

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ORB



4 Character Answers:

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NEON



5 Character Answers:

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FROWN

GLARE

SCOWL

STARE



8 Character Answers:

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NEONLAMP



9 Character Answers:

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DIRTYLOOK



11 Character Answers:

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HOSPITALITY