sound 1 adj
1 a: free from injury or disease: exhibiting normal health
b: free from flaw, defect, or decay
a sound design
2 a: free from error, fallacy, or misapprehension
based on sound judicial reasoning
b: legally valid
a sound title
3: showing good judgment or sense
sound·ly adv
sound·ness n
of sound mind: having the mental capacity to make a will esp. as demonstrated by the ability to understand the nature of one's property, identify the natural objects of one's bounty, and understand the nature of the dispositions being made in the will
sound 2 vi: to be based or founded: have a specified basis for an action
— used with in
those remedies for rent which sound ed in contract — O. W. Holmes, Jr.
sound ing in tort
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.