blue-sky

(blū'skī')
adj.

1. Unrealistic and impractical: "[The author] shows what is testable physics, what is philosphy's domain, and what is blue-sky nonsense" (Ann Finkbeiner).
2. Having a cloudless sky; clear: a blue-sky day.

intr.v., -skied, -sky·ing, -skies.
To hold or express unrealistic or impractical views, especially in estimating something. Often used with it.

Note: click on a word meaning below to see its connections and related words.

The noun has one meaning:

Meaning #1: the sky as viewed during daylight
  Synonyms: blue, blue air, wild blue yonder

---

blue sky	blue sky monthly planner
blue sky magazine	blue sky planner