If I supposed you to be related to Foreign Powers or Native Boards, it is because you have a manner, a carriage, a dignity, which you will excuse my saying that none but yourself (with the single exception perhaps of the tragic muse, when playing extemporaneously on the barrel organ before the East India Company) can parallel.
Peg, expressing her acquiescence in this arrangement, Mr Squeers turned the box bottom upwards, and tumbling the contents upon the floor, handed it to her; the destruction of the box being an extemporary device for engaging her attention, in case it should prove desirable to distract it from his own proceedings.
There are no more uses of "extemporaneous" in the book.
Show samples from other sources
She gave an extemporaneous talk on picking a college.
As soon as classes ended in the spring of 1989, Chris took his Datsun on another prolonged, extemporaneous road trip.