impregnableEnglish

Incapable of being overcome, challenged or refuted

English: impregnable, inexpugnable

Capable of conceiving

English: conceptive, impregnable

Immune to attack, incapable of being tampered with

English: impregnable, inviolable, secure, strong, unassailable, unattackable

Bahasa: kuat, teguh, gagah, ulet, sali