The Collaborative International Dictionary
Demonstrably \De*mon"stra*bly\, adv. In a demonstrable manner; incontrovertibly; clearly.
Cases that demonstrably concerned the public cause.
--Clarendon.
Wiktionary
adv. In such a manner as to be capable of being demonstrated, shown or proved.
WordNet
adv. in an obvious and provable manner; "his documentary sources are demonstrably wrong" [syn: provably, incontrovertibly]
Usage examples of "demonstrably".
These rebels, the Reverend Starbuck decided, were demonstrably feebleminded and doubtless morally infantile.
More to the point, since there is now, demonstrably, a perfect peace between Persia and Athens, Anaxagoras cannot be guilty of medism.
But constant liberal browbeating demonstrably can persuade large numbers of people that Republicans are dumb, irrespective of cold, hard facts.
Having gotten everyone in a lather by interfering with nature for years, it has decided now not to interfere with nature at all, even when that interference would be demonstrably beneficial.
It emerged quite clearly that my net income over the past two years was less than I could have earned driving a delivery van, and that my future prospects were not demonstrably much better.
The criterion for selection of pilots then, as Charley had heard it, and as he believed, was “anyone who was demonstrably unlikely to crash a nonreplaceable airplane.