adjective / adverb / noun

impromptu

im-PRAHMP-too/ˌɪmprˈɑmptu/

Created on the occasion without prior preparation.

The adults interrupt meal preparation for an impromptu dance in the kitchen.

An impromptu kitchen dance: a compact two-moment sequence shows two adults interrupted in ordinary meal preparation, then spontaneously dancing beside their unfinished work.
Etymology

Something “brought out” is ready at hand: the Latin expression meant “in readiness.” The English adjective shifts the emphasis to doing something on the spot, without advance planning.

In context

Vivid Audio Library46:09
suggested another society for impromptu acting. Nothing is to be prepared beforehand.
A Patriotic School Girl by Angela Brazil | Full Classic British School Story Audiobook

More examples

  • We hold an impromptu meeting in the hallway.
  • Asked to say a few words, she speaks impromptu.
  • The actors create a comic impromptu from the audience's suggestions.

Forms

impromptu · impromptus

Similar words

spontaneous
Stresses a natural impulse rather than lack of preparation.
extemporaneous
Usually describes speech or performance delivered without a script.
improvised
Emphasizes creating something as needed, often with limited resources.