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[bril-yuh n-see]
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noun, plural bril·lian·cies for 1.
  1. an instance of brilliance: the brilliancies of Congreve's wit.
  2. brilliance.
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Origin of brilliancy

First recorded in 1740–50; brilli(ant) + -ancy
Related formso·ver·bril·lian·cy, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for brilliancy

Historical Examples

  • In the brilliancy of his gifts he was at least the equal of Bolingbroke.

    The Grand Old Man

    Richard B. Cook

  • Nothing could exceed the delicacy of its features, or the brilliancy of its tints.

  • Brilliancy and rapidity of execution are everywhere sought as the 15.

  • Turner himself is inferior in brilliancy to nature.resemblance of what you saw.

  • I say there can be no doubt that the brilliancy of your merit will secure you a favourable reception.

    The Contrast

    Royall Tyler

Word Origin and History for brilliancy


1747; see brilliant + -cy. Also cf. brilliance.

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Online Etymology Dictionary, © 2010 Douglas Harper