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Delusion vs Undefined - What's the difference?

delusion | undefined |

As a noun delusion

is a false belief that is resistant to confrontation with actual facts.

As an adjective undefined is

lacking a definition or value.

delusion

English

(wikipedia delusion)

Noun

(en noun)
  • A false belief that is resistant to confrontation with actual facts.
  • The state of being deluded or misled.
  • That which is falsely or delusively believed or propagated; false belief; error in belief.
  • * {{quote-book
    • , year=1960 , author=William L. Shirer , title=The Rise and Fall of the Third Reich: A History of Nazi Germany , page=835 , publisher=Simon & Schuster , location=New York , isbn=0-671-72869-5 , id=LCCN 81101072 , passage=Hess, always a muddled man though not so doltish as Rosenberg, flew on his own to Britain under the delusion that he could arrange a peace settlement.}} (Webster 1913)

    Derived terms

    * delusion of grandeur

    Anagrams

    * unsoiled

    External links

    *

    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