unmodifiable

Founding-era definition · Webster's 1828 American Dictionary

UNMOD'IFIABLE, adjective That cannot be modified or altered in form; that cannot be reduced to a more acceptable or desired form.
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