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