unsound

Definitions of unsound in various dictionaries:

adj - not in good condition

adj - not sound financially

adj - containing or based on a fallacy

adj - suffering from severe mental illness

adj - physically unsound or diseased

adj - of e.g. advice

Not dependably strong or solid.

Not physically or mentally healthy.

Not true or logically valid; fallacious: an unsound conclusion.

adj - being in good health or condition

verb - to make a sound (something that stimulates the auditory receptors)