گزارش خطا در معنی کلمه 'come out of a clear blue sky'

1 general:: Phrase(s): come out of a clear blue sky [and] come out of the clear blue sky; come out of the blue suddenly; without warning. • Then, out of a clear blue sky, he told me he was leaving. • My sister Mary appeared on my doorstep out of the blue, after years with no word from her.