What's the difference between
and
Enter two words to compare and contrast their definitions, origins, and synonyms to better understand how those words are related.

Impromptu vs Undefined - What's the difference?

impromptu | undefined |

As adjectives the difference between impromptu and undefined

is that impromptu is improvised; without prior preparation, planning or rehearsal; extemporaneous; unplanned while undefined is lacking a definition or value.

As a noun impromptu

is (music) a short musical composition for an informal occasion often with the character of improvisation and usually to be played solo.

impromptu

English

Adjective

(-)
  • Improvised; without prior preparation, planning or rehearsal; extemporaneous; unplanned.
    • The party began with an impromptu rendition of 'Happy Birthday'.

    Synonyms

    * See also

    Noun

    (en noun)
  • (music) a short musical composition for an informal occasion often with the character of improvisation and usually to be played solo.
  • any composition, musical or otherwise, that is created on the spot without preparation.

    • 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