Cuneiform is the oldest known writing system in the world, developed around 3200 B.C.E. by the Sumerians in the ancient city of Uruk, in what is now southern Iraq. The name comes from the Latin word “cuneus,” meaning wedge, because the script is made up of small wedge-shaped marks pressed into soft clay. It remained in use for over 3,000 years, with the last known cuneiform text dating to 75 C.E.
How Cuneiform Was Written
Cuneiform was designed to be written on clay. A scribe would take moist clay, readily available from Mesopotamian rivers, and shape it into a flat tablet. Then, using a stylus cut from a reed, the scribe pressed the tip into the clay’s surface to create a wedge-shaped impression. The key distinction from modern writing: the stylus was lifted after each mark rather than dragged across the surface like a pen. Every character was built from combinations of individual wedge impressions, each one requiring a separate press.
There are three basic types of wedges: vertical, horizontal, and oblique. Scribes controlled which type they made by changing the angle of the stylus against the tablet. Reed was the most common stylus material, with one species of giant reed being especially well suited, though bone, wood, and ivory styli have also been found at archaeological sites. At the site of ancient Sippar in Iraq, archaeologists recovered twelve bone styli that look like short slats, beveled at one or both ends.
Although clay tablets were the primary medium, cuneiform eventually spread to other surfaces. Scribes carved it into stone, scratched it into metal, and even pressed it into wax-covered wooden boards. These boards were hinged together like small books, with a layer of beeswax mixed with yellow ochre filling the recessed surface of each panel. On one Middle Assyrian bronze artifact, the wedges were hammered in using an iron punch, each wedge shaped through multiple blows.
From Pictures to Wedges
Cuneiform didn’t start as wedge marks. The earliest version, called proto-cuneiform, used simple pictures scratched into clay with a pointed tool around 3200 B.C.E. A drawing of a head meant “head,” a drawing of grain meant “grain.” These pictographs worked fine for basic record-keeping, but they were slow to draw and limited in what they could express.
Over the following centuries, scribes realized that pressing an angular-tipped tool into the clay was far faster than scratching pictures. The images gradually became more abstract, losing their pictorial quality and turning into standardized patterns of wedge impressions. More importantly, the signs began to represent sounds rather than just objects. This shift from pictures to a system that could capture syllables and phonetic values was what made cuneiform powerful enough to record spoken language, not just inventory lists.
Languages Written in Cuneiform
Cuneiform was not a single language. It was a script, a way of writing, that multiple civilizations adapted to their own languages over thousands of years. The Sumerians created it, but Sumerian itself likely died out as a spoken language around 2000 B.C.E. It survived for centuries afterward as a scholarly and religious language, much like Latin in medieval Europe.
The most widely used cuneiform language was Akkadian, which had two main dialects: Babylonian and Assyrian. These are Semitic languages, related to Arabic and Hebrew. Beyond Mesopotamia, the Hittites in present-day Turkey adopted cuneiform, as did the Elamites in what is now Iran. Even Egyptian pharaohs used cuneiform when writing diplomatic letters to Hittite kings. The script’s influence stretched from India to Greece.
Old Persian cuneiform, a simplified version with far fewer signs, was used for royal inscriptions by the Persian Empire. It was this version that ultimately helped scholars crack the code of the entire writing system.
What Cuneiform Was Used For
The earliest cuneiform tablets are accounting records. One of the oldest known examples, dating to around 3100 B.C.E., tracks the allocation of beer. For its first several centuries, the script was primarily a bookkeeping tool for the large, centralized economies of Sumerian cities, recording transactions, crop yields, and distributions of goods. About 6,000 proto-cuneiform tablets survive from the earliest period alone, containing more than 38,000 lines of text.
As the script matured, its uses expanded dramatically. Cuneiform recorded legal codes, including the famous laws of Hammurabi. It preserved the Epic of Gilgamesh, one of the earliest works of literature. Scribes used it for astronomical observations, mathematical calculations, medical texts, prayers, personal letters, and treaties between kingdoms. By the time cuneiform reached its full complexity, it could express virtually anything a society needed to communicate or preserve.
How Scribes Were Trained
Learning cuneiform was a serious undertaking. Young boys attended scribal schools known in Sumerian as “edubba,” meaning “tablet house.” These schools flourished across Mesopotamia roughly 4,000 years ago. The curriculum was structured and progressively difficult: students started by memorizing sign lists and copying lexical texts before advancing to literary compositions. Mastering cuneiform meant learning hundreds of signs, many of which could represent multiple sounds or meanings depending on context.
Archaeologists have excavated thousands of clay tablets containing school exercises from the city of Nippur, giving a detailed picture of what students practiced. Sumerian literary texts describe school life in vivid terms, including the frustrations of students and the strictness of teachers. Literacy was rare and professionally valuable. Scribes held important positions in temples, palaces, and trading houses.
How Cuneiform Was Deciphered
After cuneiform was replaced by alphabetic writing systems sometime after the first century C.E., the hundreds of thousands of inscribed clay tablets went unread for nearly 2,000 years. The breakthrough came in the 1830s and 1840s, when a British army officer named Henry Rawlinson scaled a cliff face at Behistun in western Iran to copy a massive inscription carved into the rock by the Persian king Darius I around 520 B.C.E.
The Behistun Inscription was written in three languages: Old Persian, Elamite, and Babylonian, all in cuneiform script. Rawlinson focused first on the Old Persian portion, which had the fewest signs and was closest to known languages. His success with Old Persian gave scholars the key to unlocking the far more complex Babylonian script. By 1857, Rawlinson and other scholars had successfully deciphered Mesopotamian cuneiform, opening up thousands of years of previously lost history.
The Scale of What Survives
Clay, it turns out, is an excellent medium for preservation. Tablets that were baked intentionally or fired accidentally when buildings burned have survived in remarkably good condition for thousands of years. Museums and collections around the world hold an enormous number of cuneiform objects, with hundreds of thousands of tablets excavated from sites across Iraq, Syria, Turkey, and Iran. Many remain untranslated, and new discoveries from archaeological sites and museum storerooms continue to surface. Recent research has also suggested that the origins of cuneiform writing may be more complex than once thought, with evidence of proto-cuneiform systems possibly existing in Syria and Turkey as early as the mid-fourth millennium B.C.E., not just in southern Iraq.