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13th
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obtuse
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voracious
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stress
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hail
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concavo-concave
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read/write head
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entering
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fagged
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account for
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mastered
mastered /ˈmæstɝd/
adjective
-
Understood perfectly
(
down pat
, mastered
, down
)
understood perfectly
Had his algebra problems down
had his algebra problems down