the GNU version of the Collaborative International Dictionary of English
adj. Not hoped or expected.
The Century Dictionary and Cyclopedia
Not hoped or looked for; unexpected; not so probable as to excite hope.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. so unexpected as to have not been imagined
Word Usage
"At times I would be encouraged by a little unhoped-for success, at others I would be in the deepest despair because of accidents and failures resulting from my inexperience."