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Extemporaneous vs Impromptu - What's the difference?

extemporaneous | impromptu |

Impromptu is a synonym of extemporaneous.



As adjectives the difference between extemporaneous and impromptu

is that extemporaneous is without preparation or advanced thought; offhand while impromptu is improvised; without prior preparation, planning or rehearsal; extemporaneous; unplanned.

As a noun impromptu is

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

extemporaneous

English

Adjective

(en adjective)
  • without preparation or advanced thought; offhand

    • Synonyms

    * (without preparation) extemporal (archaic), improvised; see also

    Related terms

    * extemporanea * extemporaneousness * extemporize

    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.