n.
Pronunciation: ' sau ̇ nd
Function: adjective
Etymology: Middle English, from Old English gesund; akin to Old High German gisunt healthy
Date: 13th century
1 a : free from injury or disease : exhibiting normal health b : free from flaw, defect, or decay < sound timber>
2 : SOLID , FIRM also : STABLE
3 a : free from error, fallacy, or misapprehension < sound reasoning> b : exhibiting or based on thorough knowledge and experience < sound scholarship> c : legally valid <a sound title> d : logically valid and having true premises e : agreeing with accepted views : ORTHODOX
4 a : THOROUGH b : deep and undisturbed <a sound sleep> c : HARD , SEVERE <a sound whipping>
5 : showing good judgment or sense < sound advice>
synonyms see HEALTHY , VALID
– sound · ly \ ' sau ̇ n(d)-l ē \ adverb
– sound · ness \ ' sau ̇ n(d)-n ə s \ noun