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[uhn-der-doo] /ˌʌn dərˈdu/
verb (used with or without object), underdid, underdone, underdoing.
to do less or in a lesser fashion than is usual or requisite.
Origin of underdo
First recorded in 1605-15; under- + do1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Historical Examples
  • The English overdo or underdo everything, and are either drunk or in despair.

    Winterslow William Hazlitt
  • It is distinctly unhealthful either to overdo or to underdo work, play, rest, or sleep.

    How to Live Irving Fisher and Eugene Fisk
  • A young fellow should be ambitious to shine in everything—and, of the two, always rather overdo than underdo.

  • A young fellow should be ambitious to shine in everything; and, of the two, rather overdo than underdo.

    A Letter Book George Saintsbury

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