Unsound - Definition
unsound
adj 1: not in good condition; damaged or decayed; "an unsound
foundation" [ant: sound]
2: not sound financially; "unsound banking practices" [ant:
sound]
3: containing or based on a fallacy; "fallacious reasoning"; "an
unsound argument" [syn: fallacious, unsound]
4: suffering from severe mental illness; "of unsound mind" [syn:
mentally ill, unsound, unstable]
5: physically unsound or diseased; "has a bad back"; "a bad
heart"; "bad teeth"; "an unsound limb"; "unsound teeth" [syn:
bad, unfit, unsound]
6: of e.g. advice