Found 2 items, similar to unprecedented.
English → English (WordNet) Definition: unprecedented unprecedented adj : having no precedent; novel; “an unprecedented expansion in population and industry” [ant: precedented]
English → English (gcide) Definition: Unprecedented 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]