the GNU version of the Collaborative International Dictionary of English
n. The quality or state of being perverse; perverseness.
The Century Dictionary and Cyclopedia
n. Perverse character, disposition, tendency, or conduct; disposition to be contrary; perverseness.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. deliberately deviating from what is good
n. deliberate and stubborn unruliness and resistance to guidance or discipline
Word Usage
"The ultimate end of the relentless pursuit of perversity is probably something like the world of Charles Stross's Glasshouse, a novel depicting a post-singularity society that must be one of the most miserable and monotonous places I have ever read about."