'Unprecedented' definitions:

Definition of 'unprecedented'

(from WordNet)
adjective
Having no precedent; novel; "an unprecedented expansion in population and industry" [ant: precedented]

Definition of 'Unprecedented'

From: GCIDE
  • 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]

Words containing 'Unprecedented'