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| Language: | Old English |
| Origin: | gesund |
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sound3 W3
1 sensible and likely to produce the right results [≠ poor]: 
The book is full of sound advice.a man of great integrity and sound judgement a sound investment
well-judged
The book is full of sound advice.a man of great integrity and sound judgementa sound investment2
person
British Englisha) someone who is sound can be depended on to make good decisions and give good advice
b) informal someone who is sound is a good person and can be trusted - used especially by young people : My mum's sound. She'd never throw me out.
My mum's sound. She'd never throw me out.3 complete and thorough : a sound understanding of money and banking systems a sound knowledge of English He has sound grasp of European history.
thorough
[only before noun]a sound understanding of money and banking systemsa sound knowledge of EnglishHe has sound grasp of European history.4 in good condition and not damaged in any way [≠ unsound]: The floor was completely sound.
in good condition
The floor was completely sound.5 physically or mentally healthy [≠ unsound]
healthy
sound as a bell British English spoken (=in perfect health)
—soundness noun [uncountable]
