the GNU version of the Collaborative International Dictionary of English
n. The quality or state of being inscrutable; inscrutableness.
The Century Dictionary and Cyclopedia
n. The character of being inscrutable or not subject to scrutiny.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the quality of being impossible to investigate
Word Usage
"Kind and rude, eloquent and reticent, he's an altruistic loner, a misanthropic do-gooder, a study in inscrutability straight out of Eudora Welty or William Faulkner."