1. In a manner to resist assault.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• inpregnable,
• umpregnably,
• jmpregnably,
• kmpregnably,
• ompregnably,
• 9mpregnably,
• 8mpregnably,
• inpregnably,
• ikpregnably,
• ijpregnably,
• imoregnably,
• impregably,
• impergnably,
• impreganbly,
• impregnebly,
• Impregnalebly,
• Impregniblly,
• Impregnibley,
• Impregnabley,
• Impreganably

• impregnate,
• impressionable,
• impregnation,
• impressed,
• impregnated,
• imprecisely,
• impressible,
• improbable,
• improvable,
• impregnability,
• improbably,
• imprecate,
• imprecise,
• impregnable.

The adjective form of the word "impregnably" is "impregnable".

The plural form of "impregnably" is "impregnables".

The singular form of the word "impregnably" is "impregnable"