a test that’s scientifically unsoundunsoundun‧sound /ˌʌnˈsaʊnd◂/ adjective 
a test that’s scientifically unsound2an unsound building or structure is in bad condition: The houses are structurally unsound.3 formal physically or mentally ill: people of unsound mind (=people who are mentally ill)
EXAMPLES FROM OTHER DICTIONARIES
- unsound banking practices
- Again I suggest that this line of argument is unsound.
- Around 1902 the Leversons lost money through an unsound investment.
- Cassie entertained more than a suspicion that John would definitely prove to be very ideologically unsound indeed!
- He claimed that the site was geologically unsound and any stress caused by a shift in water levels could cause an earthquake.
- If, then, the Member is still of unsound mind, his seat is automatically vacated.
- In the summer of 1913 Chapman at last turned his attention to City's unsound defence.
- Some attacked the fact that faster growth has been environmentally unsound, creating excessive carbon emissions and destroying natural habitats.
- When they found that this was impossible, they turned their backs on religion and declared its teachings to be unsound.
COLLOCATIONS FROM THE ENTRY a test that’s scientifically unsound The houses are structurally unsound. people of unsound mind (=people who are mentally ill)COLLOCATIONS FROM THE CORPUSADVERB
1not based on facts or good reasonsideologically/scientifically/ecologically etc unsound a test that’s scientifically unsound The houses are structurally unsound. people of unsound mind (=people who are mentally ill)· It was expensive, high tech, brutal and, I don't doubt, ecologically unsound but I loved it all.· Also, many names are painted on the bottom of the routes - ecologically unsound, but convenient!
· Cassie entertained more than a suspicion that John would definitely prove to be very ideologically unsound indeed!· I would go further and suggest that it is also ideologically unsound.
NOUN· If, then, the Member is still of unsound mind, his seat is automatically vacated.
a test that’s scientifically unsound2an unsound building or structure is in bad condition: The houses are structurally unsound.3 formal physically or mentally ill: people of unsound mind (=people who are mentally ill)