Dictionary

incontestibly en · ADV

Etymology

From incontestible + -ly.

Meanings

1. (alt-of, alternative) Alternative form of incontestably.
   alt of incontestably
   • It therefore appears to me incontestibly true, that not only Governments did not begin by arbitrary Power, ..., but even that, allowing they had commenced in this manner, such Power ... could never have served as a Foundation to the Rights of Society, nor of course to the Inequality of Institution. 1761, Jean-Jacques Rousseau, A discourse upon the origin and foundation of the inequality among mankind, page 155:

Forms