cloud nine

The popular story

The explanation you will meet most often is crisply mechanical. The United States Weather Bureau, so the story goes, classified clouds by number, and cloud nine was the towering cumulonimbus that piles up to the very top of the sky. To be on cloud nine, therefore, was to sit as high as it is possible to sit, wrapped in the softest and most exalted of clouds. The tale is sometimes traced to the International Cloud Atlas of 1896, whose scheme of cloud types placed the swelling cumulonimbus ninth in the list.

It is a satisfying story because it is so specific. It offers a document, a number and a reason, and it flatters the idea that even our dreamiest expressions rest on sober science. A second, homelier account simply links the phrase to seventh heaven and treats the number as a natural companion to other numbered states of bliss. A third, heard less often, points to Buddhist tradition, in which the ninth of the ten stages on the path to enlightenment is a state of near-perfect calm; here, too, the appeal lies in a ready-made ladder of ascending bliss.

All three share the same shape. They begin with the finished phrase and reason backwards to a numbered system that might explain it, choosing whichever chart, heaven or scripture happens to have a ninth rung. It is a natural way to think, and it is almost always how folk etymology works: the answer is assumed to be as neat as the phrase is memorable.

What the record shows

The written record tells a looser and more interesting tale. The number was never fixed. Early users reached for whichever figure sounded right, and the surviving citations show a whole flock of clouds. The earliest firmly datable relative is not cloud nine at all but cloud eight, recorded in Albin Pollock’s 1935 glossary of American slang, The Underworld Speaks:

Cloud eight, befuddled on account of drinking too much liquor.

That is a long way from serene happiness. The imagery here is of a man whose head is in the clouds because he is drunk, not because he is in love. The specific form cloud nine is reported only from the mid-1940s, with a citation noted in an American newspaper of 1946, while cloud seven is recorded a decade later, from around 1956, probably by contamination from seventh heaven. Commentators have also found cloud thirty-nine, which no atlas could ever justify.

This scatter of numbers is fatal to the tidy Weather Bureau story. If the phrase had genuinely descended from a numbered cloud chart, we would expect the number to be stable from the start. Instead we watch writers experiment, and only gradually settle on nine, most likely helped along by the radio and television of the 1950s, where the form seems to have caught the public ear.

The cloud-atlas claim also stumbles on its own detail. The 1896 atlas did group clouds into ten types, and the cumulonimbus does rise higher than the rest, but nothing connects that dry piece of classification to a slang term for happiness, and the numbering of cloud types has shifted between editions in any case. To turn a meteorologist’s list into a metaphor for joy, someone would have had to make the leap in writing, and no such leap survives. The chart is real; the bridge from it to the idiom is entirely missing.

The verdict

The honest answer is unproven. There is no documentary link between the International Cloud Atlas and the idiom, and reference works that have examined the claim treat it as folk explanation rather than established fact. Etymonline flatly calls the phrase of uncertain origin. The meteorological story is not impossible, but it has never been shown, and the wandering early numbers argue against it. We can date the expression’s early life with fair confidence; we cannot say who coined it or why the sky became a measure of joy.

What we don’t know

We do not know the first person to feel elated enough to invent a numbered cloud, nor the setting in which the phrase was born. We cannot say for certain why nine triumphed over eight and seven, though the pull of rhythm and the memory of seventh heaven are plausible nudges. And we cannot rule the cloud-atlas theory entirely out; we can only say that no evidence supports it. This is precisely the kind of gap where a confident invented date would do real harm, so we leave the year open.

How it changed

The clearest shift is in feeling. In its earliest life the cloud imagery carried a whiff of the daze – the drunk, the dreamer, the person not quite in touch with the ground. Over the middle of the twentieth century that vagueness sweetened into unqualified happiness. By the time popular songs and everyday speech had adopted it, cloud nine meant delight and nothing else, and the older sense of befuddlement had quietly evaporated. The number, too, hardened. Where writers of the 1930s and 1940s felt free to choose, later speakers treated nine as the only correct figure, and the alternatives now sound like mistakes.

Usage today

Today on cloud nine is one of the most common ways in English to describe being overwhelmed by good feeling, whether at a wedding, a promotion or the birth of a child. It is warm, slightly informal and entirely positive, and it almost always appears with the preposition on. The older variants have all but vanished from ordinary speech, surviving mainly as curiosities in dictionaries and etymology columns. The phrase’s charm is that it still does exactly what its inventors, whoever they were, seem to have wanted: it lifts the speaker clean off the ground.