Out of the blue
Meaning
Something that happens completely unexpectedly or without any prior warning.
Origin
The phrase "out of the blue" paints a vivid picture of something materializing from an otherwise empty, clear blue sky, much like a sudden meteor or an unexpected aircraft appearing without warning. This imagery of an unblemished, silent expanse giving birth to an event without any prior indication began to solidify in English usage around the mid-19th century. It likely evolved from earlier expressions such as "a bolt from the blue," which more specifically implied a sudden, catastrophic event. However, "out of the blue" broadened its scope, becoming the perfect descriptor for any occurrence—good, bad, or neutral—that catches one completely off guard, arriving with the abruptness of a phenomenon plucked directly from the boundless, unblemished heavens.
Examples
- Her old friend called her out of the blue after ten years of no contact.
- The company announced a new policy out of the blue, surprising all the employees.