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Impromptu vs Promptly - What's the difference?

impromptu | promptly |

As an adjective 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.

As an adverb promptly is

in prompt manner; both soon and quickly.

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.

    • promptly

    English

    Adverb

    (en adverb)
  • In prompt manner; both soon and quickly.
  • *
    • the ducklings nestled down inside it and promptly fell asleep.