Verb (used without object) : He can extemporize on any of a number of subjects.    From Dictionary.com. 

As so often in our institutional history, the right answer was to extemporise judiciously.    From Wordnik.com.  [Gordon Brown, Charlie Whelan and Me] Reference

Hornblower forced himself to extemporise some casual sentence which may or may not have been relevant.    From Wordnik.com.  [Hornblower In The West Indies]

In the meantime he seated himself at another piano of ancient aspect, and beginning to extemporise soon became lost in reverie.    From Wordnik.com.  [Story-Lives of Great Musicians] Reference

Dismayed by this reflection, he took his hands from the keyboard and, turning to Mozart, said, 'Will you give me a theme on which to extemporise?'.    From Wordnik.com.  [Story-Lives of Great Musicians] Reference

She could repeat prayers and extemporise them as of old, but there was no more satisfaction in the effort than in asking a favour of an empty room.    From Wordnik.com.  [The Beth Book Being a Study of the Life of Elizabeth Caldwell Maclure, a Woman of Genius] Reference

Was she an helpmeet for a black-letter man, who talked with the Fathers in his daily walks, could extemporise Latin hexameters, and dream in Greek.    From Wordnik.com.  [Wylder's Hand] Reference

Once at the pianoforte, and in a genial mood with his surroundings, he would extemporise for one and two hours at a stretch, amid the solemn silence of his listeners.    From Wordnik.com.  [Among the Great Masters of Music Scenes in the Lives of Famous Musicians] Reference

They had to extemporise crimes, and they were not scrupulous about it.    From Wordnik.com.  [The Trial and Death of Jesus Christ A Devotional History of our Lord's Passion] Reference

Mr. MacLeod had therefore to extemporise literally on the spur of the moment.    From Wordnik.com.  [Pages from the Notebook of an Ottawa Correspondent] Reference

“The readiest thing, ” replied Laertes, “were for us to extemporise a play.    From Wordnik.com.  [Chapter IX. Book II] Reference

There was no bed from which to take the sheets and blankets to extemporise a rope.    From Wordnik.com.  [Charlie to the Rescue] Reference

After dinner the older visitors sit down to cards, and the young people extemporise a dance.    From Wordnik.com.  [Russia] Reference

And thus I have had to extemporise an index for myself under such sad heads as those of Brodie's.    From Wordnik.com.  [Samuel Rutherford and some of his correspondents] Reference

So why did the innately cautious Brian Cowen decide to extemporise his address on Thursday night?.    From Wordnik.com.  [Independent.ie - Frontpage RSS Feed] Reference

I could very soon black myself all over, and a nigger's costume will not take long to extemporise.    From Wordnik.com.  [The Three Midshipmen] Reference

Delivered without notes it saw the PM extemporise on a whole range of issues both global and domestic.    From Wordnik.com.  [Telegraph Blogs] Reference

More than this, in one corner still lay some of the wraps which he had evidently used to extemporise a bed.    From Wordnik.com.  [The Cock-House at Fellsgarth] Reference

As I crossed the floor I tried to extemporise a prayer, but stopped short to listen, and never finished it.    From Wordnik.com.  [J. S. Le Fanu's Ghostly Tales, Volume 1] Reference

If you were there, and perhaps J. and B. as well, we might extemporise something purely for our own diversion.    From Wordnik.com.  [Correspondence of Wagner and Liszt]

The small jelly-speck, which we call the amoeba, has no organs save what it can extemporise as occasion arises.    From Wordnik.com.  [Selections from Previous Works and Remarks on Romanes' Mental Evolution in Animals] Reference

To reach this, it was necessary to extemporise by means of a rope a species of ratlins by which he could climb the rigging.    From Wordnik.com.  [The Dominion of the Air; the story of aerial navigation] Reference

But national spirit could not extemporise a fleet or produce trained officers and sailors to match the conquerors of Lepanto.    From Wordnik.com.  [English Seamen in the Sixteenth Century Lectures Delivered at Oxford Easter Terms 1893-4] Reference

It was a reminder that for the past 16 years Americans have had two Presidents who would often extemporise and express emotion.    From Wordnik.com.  [Telegraph.co.uk: news business sport the Daily Telegraph newspaper Sunday Telegraph] Reference

They are forbidden to read, and forbidden to extemporise, and by practice they speak from memory -- some well, all tolerably. '.    From Wordnik.com.  [Correspondence & Conversations of Alexis de Tocqueville with Nassau William Senior from 1834 to 1859, Volume 2] Reference

He could scarcely recollect a word of his part, but he remembered the general drift of it, and had ready wit enough to extemporise.    From Wordnik.com.  [The World of Ice] Reference

Was she an helpmeet for a black-letter man, who talked with the Fathers in his daily walks, could extemporise Latin hexameters, and dream in.    From Wordnik.com.  [Wylder's Hand] Reference

It was the custom that every poet crowned at the Capitol should recite or extemporise some piece of poetry, before the destined laurel was placed on his head.    From Wordnik.com.  [Corinne, Volume 1 (of 2) Or Italy] Reference

He therefore made a mighty effort of will; sat up; undid the soaking bandage, and proceeded to extemporise a sort of tourniquet with it and a short piece of stick.    From Wordnik.com.  [The Buffalo Runners A Tale of the Red River Plains] Reference

Virginia slaveholder were inveterate upon him, and he found it difficult to extemporise forms of speech suited to the latitude of a free state and to the ears of a free people.    From Wordnik.com.  [Anthony Burns : a history,] Reference

Not having the real thing, with great ingenuity they proceeded to extemporise an imitation, the appearance of which they hoped would be sufficient to frighten off the foreigner.    From Wordnik.com.  [Our Sailors Gallant Deeds of the British Navy during Victoria's Reign] Reference

But if any PPC cannot extemporise a selling pitch for such a brilliant document, then they don’t deserve to be a PPC.    From Wordnik.com.  [Actually, there IS something else…] Reference

Brown can’t extemporise lucidly he is rightly ashamed of his record and has nothing in common with anyone outside his own Party.    From Wordnik.com.  [How Brady Saved the Tory Party From Portillo] Reference

Nay, could himself extemporise some stanzas.    From Wordnik.com.  [The Works of Lord Byron. Vol. 4] Reference

But you can extemporise freely!.    From Wordnik.com.  [British Blogs] Reference

6. extemporise.    From Wordnik.com.  [A Spelling-Book for Advanced Classes] Reference