im·preg·na·ble 1 play_w2(“I0064900″) (
m-pr
g
n
-b
l)
adj.
1. Impossible to capture or enter by force: an impregnable fortress.
2. Difficult or impossible to attack, challenge, or refute with success: an impregnable argument.
im·preg·na·ble 1 play_w2(“I0064900″) (
m-pr
g
n
-b
l)