Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
not even dreamed (of) or imagined; inconceivable
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Beyond what could be imagined; unimaginable. Often used with of: undreamed luxuries; a peaceful settlement undreamed of a generation ago.