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Unfounded vs Undefined - What's the difference?

unfounded | undefined |

As adjectives the difference between unfounded and undefined

is that unfounded is having no strong foundation; not based on solid reasons or facts while undefined is lacking a definition or value.

unfounded

English

Adjective

(-)
  • Having no strong foundation; not based on solid reasons or facts.
  • Not having been founded or instituted.
  • * 1980 , Helen Louise Gardner, ?John Carey, English Renaissance studies (page 268)
    • Even the great world as yet undiscovered, the cities as yet unfounded , and the history as yet unwritten, are lost: fallen from the beginning.

    Synonyms

    * (not based on solid reasons or facts) baseless, groundless, ungrounded

    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