Y Zzzs represents sleep

zzzs

What does sleep sound like? And more practically, how do we efficiently communicate in writing and everyday life a period of time marked (hopefully) by silence and inactivity? Thankfully, a cultural consensus has been reached, one you have surely participated in. Much as ‘x’ and ‘o’ were paired with hugs and kisses long ago, the letter ‘z’ has been tasked with the great responsibility of representing sleep, often in a lengthy group of zzz’s of varying capitalizations, or even by itself. But why? Or, perhaps more appropriately, ‘y’?

The letter has a long historical association with slumber, surprisingly. Though it is difficult to cite when it became used colloquially, in writing we can trace it at least all the way back to The Writings of Henry David Thoreau: Journal 1837-1846, who wrote in reference to the low buzz of insects: “The dry z-ing of the locust is heard…” And over the years, that buzz merged with snoring, though it may have taken 20th century comics to truly cement the association in popular culture. As early as 1903 in a comic strip called The Katzenjammer Kids, the letter is seen flying from a character’s head as he rests oblivious to the titular kids’ antics (creator Rudolph Dirks was also the first to express dialogue in speech balloons). Sleep and snoring became virtually interchangeable in the language of comics and a new standard had been agreed upon. It became formalized by the American Dialect Society in 1918, and popular idioms soon followed, such as “catch some z’s.” With time, the letter became permanently linked to everyone’s favorite biological imperative.

And just why did they choose this letter in the first place? Here it becomes more revealing to simply speculate, as one unifying answer has been lost to time. Most regularly assumed is that the letter ‘z’ is the most fitting onomatopoeia to represent the sound of a snore. (Maybe because sporadic gargles and heavy breathing aren’t easily universally translated.) Snoring is often referred to as “sawing logs” given the similar sounds at play and possibly just the physical activity of sawing as a means to wear yourself out before bed. And just for fun, imagine a sawing motion. What letter’s shape does it most closely resemble in its back-and-forth, zig-zagging rhythm? Hmm...

Another popular term for sleep is a snooze. The ‘z’ resting in that word may have played an influencing factor in its linguistic synecdoche.  And where does ‘z’ land in the alphabet? Traditionally, where does sleep land in one’s day? Ah! The rabbit hole of correlations can be endless the longer you dig into it, and the longer you dig, the more likely you are to doze off. Hey! There’s another! And even though other cultures and languages have their own representations of snoring (Korean: “DE REU RUNG”; Japanese: “GU GU”; French: “RON PCHI”), ‘z’ is still commonly used worldwide.

Perhaps all of these signify it was simply Z’s destiny to represent the wide world of sleep. Perhaps its fate was inescapable. One thing’s for certain: There’s no letter that could do the job better. And now, with one less nagging question to keep you up at night, you can focus on catching some zzz’s yourself.

Further Reading:

Why Does Z Stand for Snoring? – Washington City Paper

Why Does ZZZ mean sleep? – Knows Why

Catch some z’s – Dictionary.com

How did the letter Z come to be associated with sleeping/snoring? – English Language & Usage

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