n. The state or condition of being spontaneous; spontaneity.
The Century Dictionary and Cyclopedia
n. The character of being spontaneous; spontaneity.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the quality of being spontaneous and coming from natural feelings without constraint
Word Usage
"Along with this advance, however, there is a perceptible falling off in symmetry and completeness of design, and in what I would call spontaneousness of composition."