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Illusory vs Undefined - What's the difference?

illusory | undefined |

As adjectives the difference between illusory and undefined

is that illusory is resulting from an illusion; deceptive, imaginary, unreal while undefined is lacking a definition or value.

illusory

English

Adjective

(en adjective)
  • Resulting from an illusion; deceptive, imaginary, unreal
    • Enron's profits were all illusory .

    Related terms

    * illusion * illusionary * illusive

    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