• WordNet 3.6
    • adj extemporaneous with little or no preparation or forethought "his ad-lib comments showed poor judgment","an extemporaneous piano recital","an extemporary lecture","an extempore skit","an impromptu speech","offhand excuses","trying to sound offhanded and reassuring","an off-the-cuff toast","a few unrehearsed comments"
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Webster's Revised Unabridged Dictionary
    • a Extemporaneous Composed, performed, or uttered on the spur of the moment, or without previous study; unpremeditated; off-hand; ad-lib; extempore; extemporary; as, an extemporaneous address or production.
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Century Dictionary and Cyclopedia
    • extemporaneous Made, done, furnished, or procured at the time, without special preparation; resulting from or provided for the immediate occasion; unpremeditated: as, an extemporaneous address or performance; extemporaneous support or shelter.
    • extemporaneous Synonyms Extemporaneous, Unpremeditated. There is now some disposition to apply extempore and extemporaneous to that which is unpremeditated only in form. Extemporaneous speaking or preaching is, by this view, carefully prepared in thought, arrangement, etc., only the choice of words and phraseology being left to the inspiration of the moment. Extemporary has not this sense. Unpremeditated is thus opposed to premeditated, and extemporaneous to written or recited.
    • extemporaneous In pharmacy, noting a preparation which is compounded at the time it is ordered, in distinction from a ready-made, or officinal preparation.
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Chambers's Twentieth Century Dictionary
    • adjs Extemporaneous done on the spur of the moment: hastily prepared: speaking extempore: done without preparation: off-hand
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Webster's Revised Unabridged Dictionary
See Extempore
Chambers's Twentieth Century Dictionary
L. ex, out of, tempus, temporis, time.


In literature:

The Lord's Prayer was again said, with even more varieties than before; a few extemporaneous supplications were added.
"Mystic London:" by Charles Maurice Davies
This is according to the experience of all extemporaneous speakers.
"Hints on Extemporaneous Preaching" by Henry Ware
If he didn't look like he'd do extemporaneous surgery for the sake of a dollar bill, then I'm no judge.
"Odd Numbers" by Sewell Ford
In this extemporaneous effort, his success was as splendid as in his performance of Othello.
"The Mirror of Taste, and Dramatic Censor" by Samuel James Arnold
He could also lecture extemporaneously in Latin.
"Stories of Authors, British and American" by Edwin Watts Chubb
He had his own address in his pocket, but an extemporaneous speech would have been preferable.
"Sentimental Education, Volume II" by Gustave Flaubert
Extemporaneous memory can scarcely follow thy services.
"Blackwood's Edinburgh Magazine, Volume 62, Number 361, November, 1845." by Various
Many who were present, could scarcely believe that the children spoke extemporaneously.
"A Practical Enquiry into the Philosophy of Education" by James Gall
Of all the other speeches, which were extemporaneous, only meagre and unsatisfactory reports can be found.
"History of Woman Suffrage, Volume II"
It was his first extemporaneous prayer of any length, and he scarcely knew how to close.
"The End of the Rainbow" by Marian Keith

In news:

The Ex- extemporaneous Howard Dean.
House minority leader Nancy Pelosi ripped Republicans for a second day on the House floor, accusing them Wednesday in an extemporaneous speech of fiddling like Nero.
Associated Press Ohio Gov John Kasich tends to speak extemporaneously, not from a script.
At 71, he still keeps a hectic schedule and speaks extemporaneously on everything from voting rights to hostages in Gambia.
When I was a lad there was a woman who would choose a position on the square in Marshall, usually on the south or east side, and give extemporaneous speeches to any and all that would listen.
With completely extemporaneous performances and refusal to practice or designate a bandleader, the Fort Worth experimental ensemble is much closer to a drinking club of crack musicians.
(MoneyWatch) COMMENTARY I consider myself a very good extemporaneous speaker -- in fact, public speaking is one of my strongest skills.