soundness Meaning, Definition & Usage

  1. noun a state or condition free from damage or decay
  2. noun the quality of being prudent and sensible
    wiseness; wisdom.
  3. noun the muscle tone of healthy tissue
    firmness.
    • his muscular firmness

WordNet

Sound"ness noun
Definitions
  1. The quality or state of being sound; as, the soundness of timber, of fruit, of the teeth, etc.; the soundness of reasoning or argument; soundness of faith. Syn. -- Firmness; strength; solidity; healthiness; truth; rectitude.

Webster 1913