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Substantially vs Undefined - What's the difference?

substantially | undefined |

As an adverb substantially

is in a strong substantial manner; considerably.

As an adjective undefined is

lacking a definition or value.

substantially

English

Adverb

(en adverb)
  • In a strong substantial manner; considerably.
  • * 2012 October 23, David Leonhardt, "[http://www.nytimes.com/2012/10/24/us/politics/race-for-president-leaves-income-slump-in-shadows.html?_r=1&hp]," New York Times (retrieved 24 October 2012):
    • For the first time since the Great Depression, median family income has fallen substantially over an entire decade. Income grew slowly through most of the last decade, except at the top of the distribution, before falling sharply when the financial crisis began.
  • To a great extent; in essence; essentially.
  • Without material qualifications.

    • undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined