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)



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