blue-sky

[ bloo-skahy ]
/ ˈbluˈskaɪ /
SEE 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.

Origin of blue-sky

First recorded in 1890–95

Words nearby blue-sky

blue-ribbon, blue-ribbon jury, blue-ringed octopus, blue-rinse, blue-singlet, blue-sky, blue-sky law, blue-sky thinking, blue-tongued lizard, blue-water, blue-winged teal

Words related to blue sky

impractical, unworkable, improbable, unreal, silly, quixotic, impossible, hallucinatory, whimsical, misleading, false, fantastic, illusory, fanciful, dreamlike, imaginative, fantastical, fictional, preposterous, offbeat

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 result a blue-sky project

verb -skies, -skying or -skied

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