Webster's English Dictionary

Enter the word to look up:

impromptu

im.promp.tu \im-'pra:m(p)-(.)t(y)u:\ aj [F, fr. impromptu extemporaneously, 
   fr. L in promptu in readiness] 1: made or done on or as if on the spur of 
   the moment : IMPROVISED  2: composed or uttered without previous study or 
   preparation  - impromptu avor ;n