blue-sky
UK[ˌbluː ˈskaɪ]US[ˌbluː ˈskaɪ]
adj
Relating to creative thinking or planning that is not limited by current practical or financial constraints.
adj
(of a project or idea) Not yet practical or profitable; speculative.
Morpheme Breakdown
blue
sky
blue
color
sky
atmosphere
Etymology
The compound "blue-sky" is a modern metaphorical formation, drawing directly from the imagery of a clear, unobstructed sky. The color "blue" has long been associated with openness, distance, and the ideal, while "sky" represents the limitless and the aspirational. Combined, the term literally evokes an unbounded, clear expanse, which in the early 20th century was applied figuratively to ideas and projects considered visionary, pure, or untainted by immediate practical concerns. This evolution reflects a common linguistic pattern where concrete, visual phenomena are used to conceptualize abstract qualities like freedom from limitation or speculative potential.
Analysis
Structure: blue (color) + sky (atmosphere)
'blue' is from Old English 'blāw', of Germanic origin, describing a color. 'sky' is from Old Norse 'ský', meaning 'cloud', evolving to mean the heavens or atmosphere.
Examples
The team engaged in a blue-sky brainstorming session to generate innovative concepts.
Many of the company's initial investments were in blue-sky research with no guaranteed short-term return.
The report was criticized for being too blue-sky and lacking a concrete implementation plan.