Unsoundness
The Century Dictionary and Cyclopedia
noun.
The state or character of being unsound, in any sense.
Wiktionary, Creative Commons Attribution/Share-Alike License
noun.
the state of being
unsound
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
a misconception that is fallacious and not true or valid
noun.
not mentally or physically healthy
noun.
a condition of damage or decay