Apprehensible is a synonym of understandable.
As adjectives the difference between understandable and apprehensible
is that understandable is capable of being understood; comprehensible while apprehensible is which can be apprehended (usually in the sense of being understood.
understandable
English
Adjective
(
en adjective)
Capable of being understood; comprehensible.
Capable of being accepted or excused under the circumstances.
Antonyms
* (l)
apprehensible
English
Adjective
(
en adjective)
which can be apprehended (usually in the sense of being understood)
Synonyms
* (which can be apprehended) apprehendable