adj
unsound
uhn-SOWND
adj
1
Not structurally solid; weak or defective.
"Engineers condemned the bridge as structurally unsound."
2
Not mentally or physically healthy.
"The defence argued the suspect was of unsound mind at the time."
3
Not reliable or well-founded, as of an argument or judgement.
"Critics called the economic theory unsound and outdated."
How to Use Unsound
Learner’s notesIn plain EnglishWeak or faulty — physically, mentally, or logically.
Common pairings
structurally unsound
unsound mind
unsound argument
Word Forms
more unsound comparative, unsounder comparative, most unsound superlative, unsoundest superlative
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Engineers condemned the bridge as structurally _____.