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[bloo-skahy] /ˈbluˈskaɪ/
fanciful; impractical:
blue-sky ideas.
(especially of securities) having dubious value; not financially sound:
a blue-sky stock.
Origin of blue-sky
1890-95 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for blue-sky
Contemporary Examples
Historical Examples
  • The blue-sky during all these centuries has tinged the shadows outdoors a bluish color.

    Visual Illusions Matthew Luckiesh
  • Turn a perfectly sound, entrenched business into a blue-sky factory?

    The Big Tomorrow Paul Lohrman
  • Snubbed for the first time in all her blue-sky life–and by a boy, too!

    Pemrose Lorry, Camp Fire Girl Isabel Katherine Hornibrook
  • There are some business men who look upon psychology as "blue-sky" theorizing or "new thought."

  • The bluest skies of a blue-sky land curved in fathomless majesty over the yellow valley of the Santa Fé.

    Vanguards of the Plains Margaret McCarter
British Dictionary definitions for blue-sky


(modifier) of or denoting theoretical research without regard to any future application of its result: a blue-sky project
verb -skies, -skying, -skied
to theorize (about something that may not lead to any practical application)
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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Slang definitions & phrases for blue-sky



Having no sound factual or value basis; recklessly imaginative: a budget figure, as it turned out, and a blue-sky one at that

[1900+ Finance; perhaps fr the purveyor's fanciful description being as appealing and unclouded as the wide blue sky]

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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