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idiosyncracy (plural idiosyncracies)

  1. Alternative spelling of idiosyncrasy

Usage notes[edit]

  • This spelling is commonly considered a misspelling; etymologically the preferred spelling is idiosyncrasy, which is also the only spelling given by most dictionaries, such as the Unabridged[1] and the American Heritage Dictionary.[2] This spelling is mentioned in the Oxford English Dictionary's entry for idiosyncrasy, but is marked as erroneous.[3] Webster's Third New International Dictionary[4] gives both spellings, but under the entry name idiosyncrasy.


  1. ^ idiosyncracy”, in Unabridged,, LLC, 1995–present.
  2. ^ “idiosyncracy”, in The American Heritage Dictionary of the English Language, 4th edition, Boston, Mass.: Houghton Mifflin, 2000, →ISBN.
  3. ^ Oxford English Dictionary, 1884–1928, and First Supplement, 1933.
  4. ^ Webster's Third New International Dictionary (unabridged), Chicago, Illinois, Encyclopedia Brittanica, Inc., 1993