unsound
1 ENTRIES FOUND:
Britannica Dictionary definition of UNSOUND
[more unsound; most unsound]
1
:
not based on truth or logic
:
not showing good judgment
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unsound [=faulty] arguments
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unsound business practices
2
:
poorly built or in bad condition
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an unsound [=unsafe] building
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The roof is structurally unsound.
of unsound mind
law
:
mentally ill
:
not sane
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He was found to be of unsound mind when he committed the murder.
