the GNU version of the Collaborative International Dictionary of English
n. The quality of being sanguine.
The Century Dictionary and Cyclopedia
n. Sanguine character or condition.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. feeling sanguine; optimistically cheerful and confident
Word Usage
"Such relations could contain little besides the sanguineness of hope, and the enumeration of hardships and difficulties, which former accounts had not led us to expect."