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Undoubtedly vs Undefined - What's the difference?

undoubtedly | undefined |

As an adverb undoubtedly

is without doubt.

As an adjective undefined is

lacking a definition or value.

undoubtedly

English

Adverb

(en adverb)
  • Without doubt.
  • * {{quote-book, year=1905, author=
    • , title= , chapter=2 citation , passage=The cane was undoubtedly of foreign make, for it had a solid silver ferrule at one end, which was not English hall–marked.}}

    Synonyms

    * indubitably * unquestionably * doubtlessly * undoubtably

    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