1.Definition: (of sleep) deep and complete
"A sound sleeper"
2.Definition: complete; thorough
"Politicians have no sound grasp of technology issues", "He has a sound understanding of the law"
3.Definition: exercising or showing good judgment
"A sound approach to the problem", "Sound advice", "No sound explanation for his decision"
4.Definition: financially secure and safe
"Sound investments", "A sound economy"
5.Definition: free from moral defect
"A man of sound character"
6.Definition: having legal efficacy or force
"A sound title to the property"
7.Definition: in excellent physical condition
"A sound mind in a sound body"
8.Definition: in good condition; free from defect or damage or decay
"A sound timber", "The wall is sound", "A sound foundation"
9.Definition: logically valid
"A sound argument"
10.Definition: vigorous or severe
"A sound thrashing"