Definition

1. Noun:
   • The state of not being physically or mentally healthy: "unsoundness" refers to a condition of poor health, weakness, or instability in the body or mind.
   • The quality of being flawed, invalid, or based on error: "unsoundness" describes a lack of solid reasoning, truth, or validity in an argument, idea, or structure.
   • A condition of damage, decay, or poor structural integrity: "unsoundness" can indicate a state of being in disrepair, rotten, or unsafe.

Usage Examples

• Noun:
  • The doctor was concerned about the general unsoundness of the patient's health.
  • The unsoundness of the bridge's foundation led to its closure.
  • The philosophical argument was rejected due to its logical unsoundness.

Advanced Usage

• "unsoundness of mind": A legal or formal term for a state of mental illness or instability that impairs judgment.
  • The defense claimed the defendant was not responsible due to unsoundness of mind.
• "financial unsoundness": Refers to a precarious or unstable financial condition.
  • The audit revealed the company's financial unsoundness.

Variants and Related Words

• Unsound (adj): Not healthy, strong, or valid; faulty or unreliable.
  • The building was declared unsound.
  • He made an unsound investment.

Synonyms

• Infirmity: Physical or mental weakness.
• Invalidity: The state of being logically unsound or legally unacceptable.
• Instability: Lack of stability or firmness.
• Decay: The process or state of rotting or decomposition.

Antonyms

• Soundness: The state of being in good condition, healthy, or based on valid reasoning.
• Robustness: The quality of being strong and healthy; vigorous.
• Validity: The quality of being logically or factually sound.

Noun

1. not mentally or physically healthy
   • no one can be a poet without a certain unsoundness of mind
2. a misconception that is fallacious and not true or valid
   • the unsoundness of his conclusion was obvious
3. a condition of damage or decay