Dictionary.com
definitions

blue-sky

[bloo-skahy]
|
SEE MORE SYNONYMS FOR blue-sky ON THESAURUS.COM

adjective

fanciful; impractical: blue-sky ideas.
(especially of securities) having dubious value; not financially sound: a blue-sky stock.

RELATED CONTENT

Blue Steel
Read more in this article about some frequently asked questions and fun facts related to our definitions.
READ MORE
Blue Waffle
Read more in this article about some frequently asked questions and fun facts related to our definitions.
READ MORE

RELATED WORDS

fantastic, illusory, fanciful, dreamlike, ingenious, whimsical, vivid, visionary, offbeat, artistic, extravagant, original, romantic, apparent, chimeric, chimerical, deceitful, delusive, delusory, fake

Origin of blue-sky

First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for blue-sky

Contemporary Examples of blue-sky

Historical Examples of blue-sky

  • 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

  • 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

  • There are some business men who look upon psychology as "blue-sky" theorizing or "new thought."

  • The blue-sky during all these centuries has tinged the shadows outdoors a bluish color.

    Visual Illusions

    Matthew Luckiesh

British Dictionary definitions for blue-sky

blue-sky

blue-skies

noun

(modifier) of or denoting theoretical research without regard to any future application of its resulta blue-sky project

verb -skies, -skying or -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