Definition of “unprecedented” - English Dictionary

british dictionary

“unprecedented” in British English

See all translations

unprecedentedadjective

uk /ʌnˈpres.ɪ.den.tɪd/ us /ʌnˈpres.ə.den.t̬ɪd/

C2 never having happened or existed in the past:

This century has witnessed environmental destruction on an unprecedented scale.

More examples

  • She took the unprecedented step of revealing the truth about the situation.
  • Such an event was unprecedented in the 20th century.
  • Unemployment has reached an unprecedented level.
  • This situation is unprecedented in 21st-century life.
  • Crime has risen on an unprecedented scale.

(Definition of “unprecedented” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“unprecedented” in American English

See all translations

unprecedentedadjective

us /ʌnˈpres·ɪˌden·tɪd/

never having happened or existed in the past:

We’ve entered an age of unprecedented prosperity.

(Definition of “unprecedented” from the Cambridge Academic Content Dictionary © Cambridge University Press)