out of a/the clear blue sky

out of a/the clear blue sky

Unexpectedly. She seemed so surprised by the news that it must have come out of a clear blue sky. You need to work hard—opportunities don't just come out of the clear blue sky.
See also: blue, clear, of, out, sky

out of the clear blue sky

Unexpectedly. She seemed so surprised by the news that it must have come out of the clear blue sky. You need to work hard—opportunities don't just appear out of the clear blue sky.
See also: blue, clear, of, out, sky

out of a clear blue sky

Also, out of the blue. Without warning, suddenly, as in Her offer to help us with the fundraising came out of a clear blue sky, or We got a check from Aunt Ruby out of the blue. These metaphoric terms allude to something dropping unexpectedly from the sky. [Late 1800s] Also see out of nowhere.
See also: blue, clear, of, out, sky

out of a clear blue sky

If something happens out of a clear blue sky, it happens completely unexpectedly, with no warning. The collapse of the airline did not come out of a clear blue sky. Note: People sometimes use this expression leaving out either clear or blue. Unlike many previous sharp falls in the stock markets, this one cannot be said to have come out of a clear sky. Note: This expression compares an unexpected event to a bolt of lightning from a blue sky. The expressions `out of the blue' and `a bolt from the blue' are based on a similar idea.
See also: blue, clear, of, out, sky