On cloud nine
Meaning
To be in a state of extreme happiness, joy, or euphoria.
Origin
The phrase "on cloud nine" traces its whimsical origin to the official classification system for clouds. The U.S. Weather Bureau's "International Cloud Atlas," first published in the late 19th and early 20th centuries, categorized ten main cloud types. The 'cumulonimbus' cloud, or 'cloud nine,' was the highest and most impressive of these—a towering, majestic formation associated with powerful storms but also reaching incredible altitudes. Early meteorologists and aviators might have envisioned reaching this ultimate cloud as a pinnacle experience. The idea of being 'up there,' among the loftiest and most beautiful formations, quickly became a popular metaphor for ultimate bliss and a state of complete, ethereal happiness, far above earthly worries.
Examples
- After hearing the news of her promotion, Sarah was on cloud nine for the rest of the day.
- Winning the championship put the entire team on cloud nine, celebrating their hard-earned victory.