Synonyms of unsound

Adjective

1. unsound (vs. sound), corroded, decayed, rotten, rotted

usage: not in good condition; damaged or decayed; "an unsound foundation"

2. unsound (vs. sound), bad, risky, high-risk, speculative, long, wildcat, broken, damaged, injured, unfit, unhealthy, unwholesome

usage: not sound financially; "unsound banking practices"

3. fallacious, unsound, invalid (vs. valid)

usage: containing or based on a fallacy; "fallacious reasoning"; "an unsound argument"

4. mentally ill, unsound, unstable, insane (vs. sane)

usage: suffering from severe mental illness; "of unsound mind"

5. bad, unfit, unsound, unhealthy (vs. healthy)

usage: physically unsound or diseased; "has a bad back"; "a bad heart"; "bad teeth"; "an unsound limb"; "unsound teeth"

6. unsound, unreliable (vs. reliable), undependable (vs. dependable)

usage: of e.g. advice

Definition and meaning of unsound (Dictionary)