unprecedented

UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ʌnˈprɛsɪdɛntɪd/

US:USA pronunciation: IPAUSA pronunciation: IPA/ʌnˈprɛsɪˌdɛntɪd/

US:USA pronunciation: respellingUSA pronunciation: respelling(un pres′i den′tid)



WordReference Random House Learner's Dictionary of American English © 2025
un•prec•e•dent•ed /ʌnˈprɛsɪˌdɛntɪd/USA pronunciation   adj. 
  1. never before known or experienced:an unprecedented victory.
See -cede-.
WordReference Random House Unabridged Dictionary of American English © 2025
un•prec•e•dent•ed  (un pres′i den′tid),USA pronunciation adj. 
  1. without previous instance;
    never before known or experienced;
    unexampled or unparalleled:an unprecedented event.
  • un-1 + precedent + -ed2 1615–25
un•prec′e•dent′ed•ly, adv. 
un•prec′e•dent′ed•ness, n. 
    unique, extraordinary, exceptional, novel.
Collins Concise English Dictionary © HarperCollins Publishers::
unprecedented / ʌnˈprɛsɪˌdɛntɪd/
  1. having no precedent; unparalleled
unˈpreceˌdentedly
'unprecedented' also found in these entries (note: many are not synonyms or translations):
market - phenomenal - revolutionary - sky-high - skyrocket - unexampled - unheard-of - unparalleled
Collocations: an unprecedented [verdict, ruling, decision], the [verdict] was unprecedented, an unprecedented [display, performance] (of), more...

Forum discussions with the word(s) "unprecedented" in the title:


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