IPA: /ɪmˈprɛɡnəbli/
KK: /ɪmˈprɛɡnəbli/
In a way that cannot be defeated or overcome; impossible to attack or capture.
The fortress was built to withstand any assault, standing impregnably against enemy forces.
Impregnably is formed from "impregnable" (from Latin "impregnabilis", meaning unable to be taken) and the suffix "-ly" (meaning in a manner). The word describes something that cannot be taken or penetrated, thus indicating a state of being secure or invulnerable.
Think of something that is 'unable to be taken' ('impregnable') and remember that 'impregnably' means in a manner that cannot be penetrated.