Definition of unsound adjective from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˌʌnˈsaʊnd//
    ; NAmE NAmE//ˌʌnˈsaʊnd//
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  1. 1not acceptable; not holding acceptable views ideologically unsound The use of disposable products is considered ecologically unsound.
  2. 2containing mistakes; that you cannot rely on synonym unreliable The methods used were unsound.
  3. 3(of a building, etc.) in poor condition; weak and likely to fall down The roof is structurally unsound.
  4. opposite sound
    Idioms (law) not responsible for your actions because of a mental illness
See the Oxford Advanced American Dictionary entry: unsound

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