1.
too strong to be captured or entered by force
2.
unable to be shaken or destroyed by any outside influence
3.
a place that is impregnable is very well protected and difficult to attack
4.
someone who is in an impregnable position is very difficult to defeat or remove
5.
impregnable opinions or feelings are very difficult to change
1.
too strong to be captured or entered by force
2.
unable to be shaken or destroyed by any outside influence
3.
a place that is impregnable is very well protected and difficult to attack
4.
someone who is in an impregnable position is very difficult to defeat or remove
5.
impregnable opinions or feelings are very difficult to change