unsound

/ˈʌnˌsaʊnd/

Other forms: unsoundly

Definitions of unsound

1. adjective

   not in good condition; damaged or decayed
   “an unsound foundation”

   synonyms:

   corroded

   eaten away as by acid or oxidation

   decayed, rotted, rotten

   damaged by decay; hence unsound and useless

   antonyms:

   sound

   in good condition; free from defect or damage or decay

   solid, strong, substantial

   of good quality and condition; solidly built
2. adjective

   containing or based on a fallacy
   “an unsound argument”

   synonyms: fallacious

   invalid

   having no cogency or legal force
3. adjective

   of e.g. advice
   synonyms:

   undependable, unreliable

   not worthy of reliance or trust
4. adjective

   suffering from severe mental illness
   “of unsound mind”

   synonyms: mentally ill, unstable

   insane

   afflicted with or characteristic of mental derangement
5. adjective

   physically unsound or diseased
   “an unsound limb”

   “unsound teeth”

   synonyms: bad, unfit

   unhealthy

   not in or exhibiting good health in body or mind
6. adjective

   not sound financially
   “unsound banking practices”

   synonyms:

   broken

   physically and forcibly separated into pieces or cracked or split

   damaged

   harmed or injured or spoiled

   unfit

   not in good physical or mental condition; out of condition

   unhealthy

   not in or exhibiting good health in body or mind

   injured

   harmed

   bad, high-risk, risky, speculative

   not financially safe or secure

   long

   involving substantial risk

   wildcat

   outside the bounds of legitimate or ethical business practices

   unwholesome

   detrimental to physical or moral well-being

   antonyms:

   sound

   financially secure and safe

   unbroken

   not broken; whole and intact; in one piece

   undamaged

   not harmed or spoiled; sound

   fit

   physically and mentally sound or healthy

   healthy

   having or indicating good health in body or mind; free from infirmity or disease

   uninjured

   not injured physically or mentally

   dependable, good, safe, secure

   financially sound

   healthy

   financially secure and functioning well

   solid

   financially sound

   stable

   firm and dependable; subject to little fluctuation

   wholesome

   conducive to or characteristic of physical or moral well-being