English version

blue-sky

From Longman Dictionary of Contemporary Englishblue-skyˈblue-sky adjective  IDEAconcerned with thinking of new and interesting ideas, without worrying about whether they are practical or not blue-sky thinkingFrom Longman Business Dictionaryblue-skyˈblue-sky adjective [only before noun] blue-sky thinking is thinking of ideas or solutions that are completely new and different from anything that people have thought of beforeSome blue-sky thinking was needed to try and solve the pensions’ crisis.Toyota’s blue-sky approach has completely changed the way its cars are made.
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