the GNU version of the Collaborative International Dictionary of English
n. The quality or state of being unlikely.
The Century Dictionary and Cyclopedia
n. The state of being unlikely; improbability.
n. The state of being unlike; dissimilarity.
n. Unattractiveness; the incapacity to excite liking or love.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the improbability of a specified outcome
Word Usage
"He used the extreme unlikeliness of a rescue scenario to his advantage and invented the infinite improbability drive, which became a major plot point in the story."