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acorea
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toil
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to the lowest degree
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pen-and-ink
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claw
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azymia
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week by week
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accrue
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disintegration
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rack
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concaveness
concaveness /kɒnˈkeɪvnəs/
noun
-
The property possessed by a concave shape
(
concaveness
, concavity
)
the property possessed by a concave shape