bluesky

blue-sky

[bloo-skahy]
adjective
1.
fanciful; impractical: blue-sky ideas.
2.
(especially of securities) having dubious value; not financially sound: a blue-sky stock.

Origin:
1890–95

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
blue-sky or blue-skies
 
n
1.  (modifier) of or denoting theoretical research without regard to any future application of its result: a blue-sky project
 
vb , -skies, -skying, -skied
2.  to theorize (about something that may not lead to any practical application)
 
blue-skies or blue-skies
 
n
 
vb

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