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Upstair vs Undefined - What's the difference?

upstair | undefined |

As adjectives the difference between upstair and undefined

is that upstair is (dated) upstairs while undefined is lacking a definition or value.

upstair

English

Adjective

(-)
  • (dated) upstairs
    • an upstair drawing-room

    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