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knotty point

noun

Roget 704: difficulty; hardness etc. adj.; impracticability etc. (impossibility) 471; tough work, hard work, uphill work; hard task, Herculean task, ... show more

Roget 461: inquiry; request etc. 765; search, research, quest, pursuit etc. 622.    examination, review, scrutiny, investigation, ... show more

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