out of 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