Wiktionary
unfoundedly
adv. In an unfounded way; without basis.
Usage examples of "unfoundedly".
With respect to the state of Ireland, I may only add, that by the letters which I have received from the lord-lieutenant, it appears that Sir Charles Napier had arrived at Cork with his squadron, with an able and ample body of troops, who, I am sure, are always ready to discharge their duty with unflinching bravery, and who are, therefore, entirely free from the imputations which the reports circulated this day have unfoundedly cast upon them.