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Optionary vs Undefined - What's the difference?

optionary | undefined |

As adjectives the difference between optionary and undefined

is that optionary is while undefined is lacking a definition or value.

optionary

English

Adjective

(en adjective)
  • * 1856 , The Presbyterian magazine (volume 6, page 429)
    • The idea that giving is a mere optionary thing, to be done, or not done, as one pleases, seems to be the prevailing one at present.

    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