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unprecedented

[uhn-pres-i-den-tid] /ʌnˈprɛs ɪˌdɛn tɪd/
adjective
1.
without previous instance; never before known or experienced; unexampled or unparalleled:
an unprecedented event.
Origin of unprecedented
1615-1625
1615-25; un-1 + precedent + -ed2
Related forms
unprecedentedly, adverb
unprecedentedness, noun
Synonyms
unique, extraordinary, exceptional, novel.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for unprecedented
Contemporary Examples
Historical Examples
  • Against this unprecedented breach of privilege parliament sent a deputation humbly to remonstrate; but all to no purpose.

  • Galusha had what was, for him, an amazing and unprecedented inspiration.

    Galusha the Magnificent Joseph C. Lincoln
  • He would set impositions of unprecedented length, and revile himself for ruining the victim's handwriting.

    Sinister Street, vol. 1 Compton Mackenzie
  • "Both sides fought with unprecedented frenzy," said a resident to us.

    Aztec Land Maturin M. Ballou
  • Let the celebration be of unprecedented splendour, so that the Master may be filled with wonder.

    Chaitanya's Life And Teachings Krishna das Kaviraja
British Dictionary definitions for unprecedented

unprecedented

/ʌnˈprɛsɪˌdɛntɪd/
adjective
1.
having no precedent; unparalleled
Derived Forms
unprecedentedly, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for unprecedented
adj.

1620s, from un- (1) "not" + precedented. In common use from c.1760.

Online Etymology Dictionary, © 2010 Douglas Harper
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