Noun

• S: (n) unsoundness (a condition of damage or decay)
• S: (n) unsoundness (a misconception that is fallacious and not true or valid) "the unsoundness of his conclusion was obvious"
• S: (n) unsoundness (not mentally or physically healthy) "no one can be a poet without a certain unsoundness of mind"
• direct hypernym / inherited hypernym / sister term
• antonym
• derivationally related form