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abnegator
-
twin
-
considerable
-
adequacy
-
acceptive
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go-as-you-please
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death
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abbreviate
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nobble
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wonder bean
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conundrum
conundrum /kəˈnʌndrəm/
noun
-
A difficult problem
(
brain-teaser
, conundrum
, enigma
, riddle
)
a difficult problem
