What English uses the word for
In ordinary English, paper is the thin, flexible sheet made by draining cellulose fibers from water and drying them into a mat. That is the mill product: writing stock, newsprint, wrapping, tissue. The same noun also names things that merely sit on such a sheet or once did. A morning paper is a newspaper. Wallpaper is still paper on a wall. School and scholarly papers are compositions. Your papers are identity documents. Commercial paper is a short-term debt instrument. Paper money is currency that is not coin. None of those later senses needed a new root. They are the writing surface standing in for news, argument, proof, and value.
The origin of the word paper is not native English. Old English had other words for writing surfaces, including terms for parchment and for the papyrus plant in learned contexts, but the everyday noun that names the modern sheet is a medieval borrowing.
A French loan, with a possible Catalan stop
English took the word in the Middle English period. Standard accounts date the material sense to about the mid-fourteenth century. The immediate sources are Anglo-French paper, also found as papir and in several other spellings, and Old French papier, already meaning both the stuff and a written document. The Oxford English Dictionary classifies English paper as a borrowing from French. The American Heritage Dictionary gives the same outline: Middle English from Old French papier, from Latin papyrus.
Anglo-Norman evidence sits a little earlier than the usual English date. Late-thirteenth-century texts use papir for a writing sheet, set beside parchment, and fourteenth-century legal French in England uses paper and papir for official registers and itemized accounts. The word arrived with administration and trade, not as a scholarly coinage invented in English.
One further step is often proposed and not always adopted. Some etymologies, including Wiktionary’s tree for the English entry, derive the Anglo-Norman and French forms from Old Catalan paper. On that view, Catalan reshaped Latin papyrus with its familiar suffix -er (from Latin -arius) rather than keeping a form closer to papiro. Old Catalan paper is recorded in 1249, shortly after Christian forces took Xàtiva, whose mill is frequently cited as the first paper mill in Western Europe under Christian control. Iberia had learned rag-paper making from the Islamic world, so a Catalan commercial term spreading into French and then into English is historically tidy.
It is not, however, the only story in print. Etymonline allows Anglo-French and Old French and also a direct line from Latin papyrus. Many desk dictionaries skip Catalan altogether and stop at French. The Catalan route is therefore a serious hypothesis, not a settled fact. What is settled is the larger path: English borrowed a Romance form of a Latin plant-name; it did not inherit a Germanic one.
A Greek plant-name of unknown further origin
Latin papyrus named both Cyperus papyrus, the Nile sedge, and the writing surface made from its pith. Latin took the word from Greek papyros. That Greek noun is itself a loan. Its earlier source is unknown. Reference works often add that it is said to be Egyptian, which is geographically plausible and still unproven. There is no accepted Indo-European reconstruction, and no native English morphology to unpack. Folk attempts to split paper into English pieces are inventions.
The mismatch between name and manufacture is the useful part of the history. Egyptian papyrus was a lamination of natural strips. Paper in the mill sense is a felt of fibers whose structure has been broken by beating, then reconstituted as a sheet. That technique is a Chinese invention. It travelled west through Central Asia and the Islamic world centuries before Western Europe ran mills of its own. When Europeans needed a word for the new product, they did not invent one from the Chinese or Arabic technical vocabulary in general use. They reused the old Mediterranean name for a writing surface. English later kept a learned doublet: papyrus for the plant and its ancient sheets, paper for the everyday mill product. Same Latin ancestor, two English lives.
Cognates map the Romance and later Germanic spread. French has papier, Catalan paper, Spanish and Portuguese papel (the -el ending is the usual Castilian adjustment of a Catalan-type -er). German Papier and Dutch papier are the same family. Italian largely uses carta, from Latin charta, another old word for a leaf or document, so the map is not uniform. Russian bumaga is unrelated in origin, historically tied to cotton rather than to papyrus. Welsh papur and Irish páipéar show the English or Romance form moving on into Celtic. None of these is a native Germanic inheritance parallel to, say, book or write.
Meanings that grew after the sheet was named
Once the noun was English, it followed the jobs of the material. By the 1640s paper could mean a printed news-sheet, a shortening of newspaper. From the 1660s it could mean an essay or dissertation. Papers as documents that establish identity or standing appear in the 1680s. Paper money is recorded from the 1690s; bills of exchange and related financial senses follow in the early eighteenth century. Wallpaper as interior covering is an eighteenth-century use.
The adjective, from the 1590s, first meant made of the stuff. By 1716 it could mean flimsy or merely theoretical: something that exists on a page and not in the world. Paper profits and paper corporations live on that sense. Paper tiger, popularized in English in the 1950s from a Chinese phrase associated with Mao Zedong, is the same idea in political dress: fierce in print, weak in fact.
The verb is later than the noun. In the 1590s it meant to write something down. Covering a room with hangings is an eighteenth-century sense. To paper over a crack, and then a dispute, is modern figurative English, from hiding plaster with a sheet. An older theatrical sense used paper for free passes and, as a verb, for filling a house with non-paying spectators. Those extensions are social, not etymological. They do not change where the word came from. They show how a name for a cheap, portable surface became a name for record, publicity, credential, and pretense.
One fact the everyday noun still carries
English paper is a medieval French form, perhaps filtered through Catalan, of a Greek name for an Egyptian sedge. The sedge and the mill product are different technologies. The word yokes them anyway: every ordinary sheet still wears the name of papyrus.