As an adjective assailable
is not defended or not able to be defended.
As a noun unassailableness is
state or quality of not being assailable.
assailable
English
Adjective
(
en adjective)
Not defended or not able to be defended.
Related terms
* unassailable
unassailableness
English
Noun
(-)
State or quality of not being assailable.
Synonyms
* imperviousness