unsound
/ʌnˈsaʊnd/
adjective
- Not in good condition; weak, damaged, or unhealthy.
- The building's foundation was unsound, so they had to demolish it.
- The bridge was declared unsound and closed to traffic.
- He had to stop running because of an unsound knee.
- Not based on facts, good judgment, or reliable reasoning; faulty.
- Her argument was unsound because it relied on outdated statistics.
- The scientist argued that the theory was unsound.
- Investing all your money in one company is an unsound financial decision.