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Undesirable vs Undefined - What's the difference?

undesirable | undefined |

As adjectives the difference between undesirable and undefined

is that undesirable is objectionable or not likely to please while undefined is lacking a definition or value.

As a noun undesirable

is an undesirable person.

undesirable

English

Adjective

(en adjective)
  • objectionable or not likely to please
  • *
    • There would be no need for any of the animals to come in contact with human beings, which would clearly be most undesirable .
  • * 2008 , Mary E. Klingensmith, The Washington Manual of Surgery (page 327)
    • Chronic venous disease includes cosmetically undesirable telangiectasias, varicose veins, venous ulceration, and claudication.

    Usage notes

    * Nouns to which "undesirable" is often applied: effect, consequence, result, element, change, person, substance, characteristic, quality, feature, behavior, activity, thing, event, reaction, state.

    Antonyms

    * desirable

    Noun

    (en noun)
  • an undesirable person

    • 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