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Upper vs Undefined - What's the difference?

upper | undefined |

As adjectives the difference between upper and undefined

is that upper is at a higher level, rank or position while undefined is lacking a definition or value.

As a noun upper

is that which is higher, contrasted with the lower.

upper

English

Noun

(en noun)
  • That which is higher, contrasted with the lower.
    • As the restless sleeper here, I'll take the lower berth. You take the upper .
  • (shoemaking) The piece of leather, etc., that forms the top part of a shoe above the sole.
  • A stimulant such as amphetamine that increases energy and decreases appetite.

    • Hyponyms

    * (shoemaking) vamp

    See also

    * swan upper

    Adjective

    (-)
  • At a higher level, rank or position.
  • Situated on higher ground, further inland, or more northerly.
  • (geology, of strata or geological time periods) younger, more recent
  • (education) Of or pertaining to a secondary school.

    • Antonyms

    * (at a higher position) lower, under * (situated higher) lower * (more recent) lower

    Derived terms

    * Upper Sorbian * Upper Volta * upper arm * upper case * upper class * upper house * uppermost

    Related terms

    * on one's uppers — destitute

    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