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Meaning of unsound

un•sound

Pronunciation: (un-sound'), [key]
— -er, -est.
  1. not sound; unhealthy, diseased, or disordered, as the body or mind.
  2. decayed or impaired, as timber or foods; defective.
  3. not solid or firm, as foundations.
  4. not well-founded or valid; fallacious: an unsound argument.
  5. easily broken; light: unsound slumber.
  6. not financially strong; unreliable: an unsound corporation.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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