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Unhappy vs Undefined - What's the difference?

unhappy | undefined |

As adjectives the difference between unhappy and undefined

is that unhappy is not happy; sad while undefined is lacking a definition or value.

unhappy

English

Adjective

(er)
  • Not happy; sad.
  • * The Beggar's Opera
    • A moment of time may make us unhappy forever.
  • Not satisfied; unsatisfied.
  • Not lucky; unlucky.
  • Not suitable; unsuitable.

    • Synonyms

    * See also

    Antonyms

    * happy * glad * delighted * exuberant * joyous * joyful

    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