from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Not rehearsed. See Synonyms at extemporaneous.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Not rehearsed
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. with little or no preparation or forethought
un- + rehearsed (Wiktionary)