demonstrably

adv

Etymology: Etymology tree English demonstrable Proto-Indo-European *leyg-der. Proto-Germanic *līkąder. Proto-Germanic *-līkaz Proto-Germanic *-ê Proto-Germanic *-līkê Proto-West Germanic *-līkē Old English -līċe Middle English -ly English -ly English demonstrably From demonstrable + -ly. First attested in the early 17th century.

1. In such a manner that is capable of being demonstrated, shown, or proved (without doubt).

   “The country has become demonstrably less safe under his leadership.”

   “Hence it followeth demonstrably, if our refusall to receiue Maister Blackwell to our Arch-priest, did, or could any way possibly make vs schismaticks, that the only and principall cause of such our refusall, was, and of all necessitie must needes haue bin, for that the Pope (note our words) or the Cardinall by his commission, had (instituting the subordination) appointed him for our Superior […]”