Hypertext Webster Gateway: "unprecedented"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
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.
From WordNet (r) 1.7 (wn)
unprecedented
adj : having no precedent; novel; "an unprecedented expansion in
population and industry" [ant: {precedented}]
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