Impromptu

1. имя существительное экспромт; импровизация Синоним(ы): improvisation, extemporization 2. прилагательное импровизированный Синоним(ы): spontaneous 3. наречие без подготовки, экспромтом

Большой англо-русский словарь

Impromptu

I. noun Etymology: French, from impromptu extemporaneously, from Latin in promptu in readiness 1. something that is impromptu 2. a musical composition suggesting improvisation II. adjective 1. made, done, or formed on or as if on the spur of the moment; improvised 2. composed or uttered without previous preparation; extemporaneousimpromptu adverb

Merriam-Webster's Collegiate Dictionary