impregnable 1
— impregnability, impregnableness , n. — impregnably , adv.
/im preg"neuh beuhl/ , adj.
1. strong enough to resist or withstand attack; not to be taken by force, unconquerable: an impregnable fort.
2. not to be overcome or overthrown: an impregnable argument.
[ 1400-50; late ME impregnable, imprenable im- IM- 2 + prenable PREGNABLE ]
Syn. 1. invulnerable. 1, 2 . See invincible. 2. unassailable.
Ant. 1. vulnerable.
impregnable 2
/im preg"neuh beuhl/ , adj.
susceptible to impregnation, as an egg.
[ IMPREGN(ATE) + -ABLE ]