Britannica Dictionary definition of DICKENS
the dickens
informal + old-fashioned
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used to make a statement or question more forceful
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What the dickens [=the devil] do you mean?
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We'll have to work like the dickens [=very hard] to finish this project.
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(US) It scared/frightened the dickens out of people. [=scared people very badly]
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(US) She's as cute as the dickens. [=she's very cute]