Origins
The word "snore" entered English in the early fifteenth century as the Middle English verb snoren, meaning to breathe harshly and noisily during sleep. Its origin is onomatopoeic — it imitates the very sound it describes, the rough, rattling vibration of air passing through relaxed tissues in the throat and nasal passages of a sleeping person.
The immediate relatives of the English word lie in the closely related Low German and Dutch languages. Middle Low German snorren meant "to hum, buzz, or drone," and Middle Dutch had a similar form. The connection to buzzing and droning sounds highlights the imitative nature of the root: these are all words coined to mimic sustained, vibrating noises.
Snore belongs to a remarkably productive cluster of English words beginning with sn- that relate to the nose and nasal activity. This group includes snout, snot, sneeze, sniffle, sniff, snort, snub (originally meaning to cut short, as in cutting the nose), and snivel. Linguists call this pattern a phonestheme — a sound cluster that carries a consistent semantic association without being a morpheme in the strict sense. The sn- phonestheme for nasal meanings is one of the most robust in English and has been productive since the Old English period.
Germanic Development
The German cognate is schnarchen, which follows the same imitative pattern with the characteristic German sch- replacing the English sn- onset. Swedish has snarka, Danish snorke, and Norwegian snorke — all transparently related and all imitative. The consistency of the word across the Germanic languages suggests that the onomatopoeia was either inherited from a common Proto-Germanic source or independently but convergently coined in each language, which is common with sound-imitating words.
One of the most unexpected descendants of this word family is "snorkel." The English word was borrowed from German Schnorchel during World War II, when it referred to the retractable air-intake tube on German U-boats that allowed diesel engines to run while submerged. The German word itself was dialectal, meaning a nose or snout, and was related to schnarchen ("to snore") — the idea being that the tube was the submarine's "nose" through which it breathed, making a snoring or snorting sound. After the war, the word was transferred to the swimmer's breathing tube, and the military origin was largely forgotten.
The medical study of snoring has given rise to a technical vocabulary built partly on Greek and Latin roots. The medical term for snoring is stertor, from Latin stertere ("to snore"), which is itself onomatopoeic. Severe snoring associated with obstructed breathing during sleep is called obstructive sleep apnea, a condition not formally described until the twentieth century, though the phenomenon was certainly observed long before — Dickens described a classic case in the character of Joe, the perpetually drowsy "fat boy" in The Pickwick Papers (1837).
Literary History
In literature and culture, snoring has been a reliable source of comedy since antiquity. Medieval fabliaux frequently use the snoring of a husband as a plot device enabling the wife's infidelity. Shakespeare references snoring in several plays — in The Tempest, Ariel describes the sleeping courtiers whose snoring fills the air. The association of snoring with deep, oblivious sleep made it a standard literary shorthand for unawareness and vulnerability.
The word "snore" also developed a noun form early in its history, referring both to the act of snoring and to the sound itself. By the sixteenth century, "a snore" could mean a single instance of the rattling breath, and the plural "snores" referred to the ongoing noise. The word has remained remarkably stable in both form and meaning over its six centuries in English — a sign of the staying power of onomatopoeia, where the sound of the word so perfectly matches its referent that there is little pressure for change.