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Spontaneously vs Undefined - What's the difference?

spontaneously | undefined |

As an adverb spontaneously

is in a spontaneous manner; naturally; voluntarily.

As an adjective undefined is

lacking a definition or value.

spontaneously

English

Adverb

(en adverb)
  • In a spontaneous manner; naturally; voluntarily.

    • 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