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.

blue-sky

noun

1. modifier of or denoting theoretical research without regard to any future application of its result

   a blue-sky project

verb

1. to theorize (about something that may not lead to any practical application)

Word History and Origins

Origin of blue-sky¹

First recorded in 1890–95

Example Sentences

I was in full triangle pose with nothing but blue sky in all directions and the loud whooshing wind.

From Los Angeles Times

Brilliant blue skies worthy of an Instagram filter open up in seconds, unleashing torrential rains.

From Los Angeles Times

Unperturbed by the trash, Winter gazed approvingly at the green water, which reflected the blue sky.

From Los Angeles Times

If you feel the blue sky days have been lacking this summer you would be right if you have been anywhere other than central-southern England, eastern England and parts of eastern Scotland.

From BBC

Without Root, England would have been in severe trouble, having surprisingly been inserted by Sri Lanka on a docile pitch under blue sky and sunshine.

From BBC

Related Words

• absurd
• bizarre
• extravagant
• fantastic
• fantastical
• fictional
• imaginative
• offbeat
• preposterous
• unreal
• whimsical