1817 29 Mar. 3/5 Medea, an Improvisated Tragedy.
1840 May 463/1 An improvisated orchestra of six or eight juvenile folk of the party.
1913 H. C. Chatfield-Taylor iii. 88 Other names for this variety of comedy, each suggestive of its improvisated character, are Commedia improvvisa, Commedia non scritta, and Commedia a soggetto.