Definition of impromptu in US English:

impromptu

adverb & adjective

  • Done without being planned, organized, or rehearsed.

    as adjective ‘an impromptu press conference’
    as adverb ‘he spoke impromptu’
    • ‘Some enterprising vendors have put up impromptu juice stalls selling watermelon juice.’
    • ‘Sure enough, there are bedrooms and a kitchen and even a drum set up in the entrance for impromptu rehearsals.’
    • ‘This makes us conveniently close enough for impromptu dinner party invitations.’
    • ‘I had no idea how well my impromptu plan would work, but it was the best I could come up with.’
    • ‘Footballs were retrieved from among the luggage and impromptu games began.’
    • ‘I got a phone call announcing impromptu dinner plans, so I decided to join in on that.’
    • ‘They chanted their support as they were often ordered to do and kissed his hand as he made impromptu stops along the street.’
    • ‘While the tea brewed, he searched his mind for a reason for this impromptu visit.’
    • ‘Click here to see the pictures from yesterday's impromptu outing to the zoo.’
    • ‘In just those few days they had built a complex, many-layered, fully functioning but impromptu nest!’
    • ‘In addition, he has ready money for policemen that make impromptu inspection along the way.’
    • ‘And Paul went into an impromptu rendition of " Aint no sunshine".’
    • ‘The event will also feature street theatre, live music and arts and craft stalls and nurses will be carrying out impromptu health checks.’
    • ‘Now and then, there was a bit of impromptu dancing by some of the team members.’
    • ‘He added that when he was the director general he used to make impromptu visits to the penitentiaries at night.’
    • ‘Buoyed by the success of the day, we now plan to hold an impromptu New Year's eve bash here.’
    • ‘After dinner, all six convene in Seward's study for an impromptu strategy session.’
    • ‘Some members remained in town after the parade and gave impromptu performances.’
    • ‘Passengers told how they used mobile phones and novelty glowsticks as impromptu torches to guide them to safety.’
    unrehearsed, unprepared, unscripted, extempore, extemporized, improvised, improvisational, improvisatory, improvisatorial, spontaneous, unstudied, unpremeditated, unarranged, unplanned, on the spot, snap, ad lib
    extempore, spontaneously, without preparation, without rehearsal, on the spur of the moment, offhand, ad lib
    View synonyms

noun

  • A short piece of instrumental music, especially a solo, that is reminiscent of an improvisation.

Origin

Mid 17th century (as an adverb): from French, from Latin in promptu ‘in readiness’, from promptus (see prompt).

Pronunciation

impromptu

/imˈpräm(p)ˌt(y)o͞o//ɪmˈprɑm(p)ˌt(j)u/