The Collaborative International Dictionary
Unprecedented \Un*prec"e*dent*ed\, a. Having no precedent or example; not preceded by a like case; not having the authority of prior example; novel; new; unexampled. -- Un*prec"e*dent*ed*ly, adv.
Wiktionary
adv. In an unprecedented manner.
WordNet
adv. in an unprecedented manner [ant: precedentedly]
Usage examples of "unprecedentedly".
The world by mid-twentieth century has expanded unprecedentedly toward that watershed moment when it will comprise nothing except measure.
Discarding punctilio and maxims adapted to more manageable times, and looking only to the unprecedentedly stern facts of our case, can you do better in any possible event?
The Party, the Federal Security Bureau, and the European Peoples' Army were maneuvering against each other in an unprecedentedly overt manner: military budgets queried, more MEPs and Party officials under suspicion or arrest, inquiries launched into FSB illegalities, rapid promotions and demotions and cashierings, military exercises proceeding without authorization, unscheduled call-ups of reservists (which, I guessed, added draft-evasion to my crimes).
He piloted the flat-boat successfully to Beardstown, although he said the river overflowed its banks so unprecedentedly for that season of the year, that he sometimes floated over the prairie, three miles from the channel.
And he, like Australopithecus, was active during an epoch of unprecedentedly bad weather - droughts, floods, ice ages - called the Pleistocene, which began about two million years ago.
It must be sufficient to admit that if something unprecedentedly magnificent, something quantally different, happened, it happened in a greater umwelt than mankind’s.