impregnably
English
Etymology
From impregnable + -ly.
Adverb
impregnably (comparative more impregnably, superlative most impregnably)
- In an impregnable manner; so as to defy attack.
References
- William Dwight Whitney, Benjamin E[li] Smith, editors (1911), “impregnably”, in The Century Dictionary […], New York, N.Y.: The Century Co., →OCLC.