Found 2 items, similar to unprecedentedly.
English → English (WordNet) Definition: unprecedentedly unprecedentedly adv : in an unprecedented manner [ant: precedentedly]
English → English (gcide) Definition: Unprecedentedly 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. [1913 Webster]