Main Entry: ¹sound

Pronunciation: \ˈsau̇nd\

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 b : free from flaw, defect, or decay
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 \ˈsau̇n(d)-lē\ adverb

— sound·ness \ˈsau̇n(d)-nəs\ noun