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Presumption vs Undefined - What's the difference?

presumption | undefined |

As a noun presumption

is the act of presuming, or something presumed.

As an adjective undefined is

lacking a definition or value.

presumption

English

(wikipedia presumption)

Noun

(en noun)
  • the act of presuming, or something presumed
  • * De Quincey
    • in contradiction to these very plausible presumptions
  • the belief of something based upon reasonable evidence, or upon something known to be true
    • The presumption is that an event has taken place.
  • the condition upon which something is presumed
  • (dated) arrogant behaviour; the act of venturing beyond due bounds of reverence or respect
  • * Shakespeare
    • Thy son I killed for his presumption .
  • * Dryden
    • I had the presumption to dedicate to you a very unfinished piece.

    Synonyms

    * (l)

    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