Out of the Blue Idioms Color Vocabulary Sky Idioms Sky Vocabulary Unexpected Events in English

Example: The golf ball hit me on the head out of the blue. Out of the Blue Idioms Color Vocabulary Sky Idioms Sky Vocabulary Unexpected Events in English Adverb out of the blue (idiomatic) unexpectedly; without warning or preparation After I hadn’t heard from her in six months, she called me out of the blue to meet for lunch. I really can’t understand how something like this could simply pop up out of the blue. English conversation