unsound - not sound financially
Example:- unsound banking practices
unsound - not in good condition; damaged or decayed
Example:- an unsound foundation
mentally ill, unsound, unstable - suffering from severe mental illness
Example:- of unsound mind
bad, unfit, unsound - physically unsound or diseased
Example:- has a bad back
unsound - of e.g. advice
fallacious, unsound - containing or based on a fallacy
Example:- fallacious reasoning