impenetrably

Founding-era definition · Webster's 1828 American Dictionary

IMPEN'ETRABLY, adverb With solidity that admits not of being penetrated. 1. With hardness that admits not of impression; as impenetrably dull.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI

More founding-era words: liberty · virtue · republic · justice · providence · commerce · militia · arms · prudence · establishment · religion · usurpation · tyranny · citizen · unalienable · sovereign