Unsound is a related term of deceitful.
As adjectives the difference between unsound and deceitful
is that unsound is not sound; not whole; not solid; defective; infirm; diseased while deceitful is deliberately misleading or cheating.
unsound
English
Adjective
(en-adj)
Not sound; not whole; not solid; defective; infirm; diseased.
In horse management an unsound horse is one suffering ill-health that affects its suitability for its intended work.
*
Antonyms
* sound
deceitful
English
Alternative forms
* deceiptful (obsolete)
* deceiptfull (obsolete)
* deceitfull (archaic)
Adjective
(
en adjective)
deliberately misleading or cheating
deceptive in multiple ways
Synonyms
* See also