What does the word extemporaneous mean?

Usage examples for extemporaneous

  1. This metre was used not only in rude extemporaneous effusions, but also in the long poem of Naevius, on the First Punic War. – The Roman Poets of the Republic by W. Y. Sellar
  2. Mr. Slim Travennes, with whom Mr. Cassidy had participated in an extemporaneous exchange of Colt's courtesies in Santa Fe the year before, was the head of the organization and was also chairman of the committee on arrivals, and the two gentlemen of the Bar- 20 had not been in town an hour before he knew of it. – Hopalong Cassidy's Rustler Round-Up Bar-20 by Clarence Edward Mulford
  3. Seeing Triplet, he made an extemporaneous calculation that so infernal a chatterbox could not be ten minutes in her company without telling her everything, and this would serve his turn very well. – Peg Woffington by Charles Reade