adj.
Spoken, carried out, or composed with little or no preparation or forethought. See synonyms at extemporaneous.
adv.
In an extemporaneous manner.
[Latin ex tempore : ex, of; see ex- + tempore, ablative of tempus, time.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
