unprecedented
I
adjective
anomalous, exceptional, extraordinary, first, inauditus, incomparable, initial, miraculous, modern, new, newfangled, novel, novus, original, rare, singular, uncustomary, unequaled, unexampled, unexpected, unfamiliar, unheard of, unique, unknown, unmatched, unparalleled, unrivaled, untraditional, unusual
II
index
extraordinary, nonconforming, noteworthy, novel, portentous (eliciting amazement), prodigious (amazing), renowned, singular, special, uncommon, unforeseeable, unique, unusual
Burton's Legal Thesaurus.
William C. Burton.
2006