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[id-ee-oh-sin-krat-ik, -sing-] /ˌɪd i oʊ sɪnˈkræt ɪk, -sɪŋ-/
pertaining to the nature of idiosyncrasy, or something peculiar to an individual:
The best minds are idiosyncratic and unpredictable as they follow the course of scientific discovery.
Related forms
idiosyncratically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for idiosyncratic
Contemporary Examples
Historical Examples
  • The spelling and punctuation in the original are idiosyncratic and inconsistent.

    Sylva, Vol. 1 (of 2) John Evelyn
  • Such a sentiment must, fortunately, be in some sense exceptional and idiosyncratic.

    Hours in a Library Leslie Stephen
  • There is much idiosyncratic spelling in both English and German.

  • Perhaps for the first time in his life Edward Henry intimately understood what idiosyncratic elegance was.

    The Regent E. Arnold Bennett
  • The idiosyncratic appeal Tabitha Aykroyd made to Charlotte is related identically wherever she is portrayed.

    The Key to the Bront Works John Malham-Dembleby
British Dictionary definitions for idiosyncratic


of or relating to idiosyncrasy; characteristic of a specific person
Derived Forms
idiosyncratically, 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 idiosyncratic

1779, from idiosyncrasy + -ic. Earlier in same sense was idiosyncratical (1640s). Related: Idiosyncratically.

Online Etymology Dictionary, © 2010 Douglas Harper
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