A Short History of the Swedish Language

Knowing where a language came from changes how you read it. Many of the patterns that feel arbitrary to a learner — why one verb has a be- prefix and a near-synonym does not, why old books spell vad as hvad, why a nineteenth-century novel writes de voro where you would write de var — are fossils of specific historical events. This page traces Swedish from its Old Norse roots to the modern standard, with an eye to the features an advanced learner actually meets in older texts and formal prose. The single fact to carry away: a large share of everyday Swedish, and the entire be-/för- prefix system, is borrowed from Low German during the Hanseatic centuries. Swedish is far more of a hybrid than its Scandinavian surface suggests.

From Old Norse to Old Swedish

Swedish descends from Old Norse, the common Scandinavian language of the Viking Age. The earliest specifically Swedish material is runic: thousands of runestones, most carved in the eleventh century, in the younger futhark. By around 1225 the language had diverged enough to be called Old Swedish (fornsvenska), and the great prose monuments of this period are the provincial laws (landskapslagar) of the thirteenth and fourteenth centuries — Västgötalagen and the rest — which give us our first substantial connected Swedish.

Old Swedish still had much of the Old Norse machinery: a full case system (nominative, accusative, genitive, dative), grammatical gender in three classes (masculine, feminine, neuter — later collapsing the first two into today's common gender), and plural verb agreement. A reader who can follow modern Swedish will recognise the vocabulary of a runestone but stumble over its grammar.

The Low German flood: the Hanseatic era

The most consequential event in the history of Swedish vocabulary was not a conquest but a trading network. During the thirteenth and fourteenth centuries the Hanseatic League dominated Baltic commerce, and Middle Low German was its lingua franca. German merchants and craftsmen settled in Swedish towns — Stockholm's medieval council was partly German-speaking — and Low German became the prestige language of trade, crafts, and town administration.

The result is that Middle Low German is the single largest source of loanwords in Swedish. Words for trade, money, crafts, warfare, and town life poured in, and many of them are now the most ordinary words imaginable — words a learner meets on day one and would never guess are borrowed.

Even more striking, the borrowing reached into the grammar. The prefixes that build so many Swedish verbs — be- and för- (and the rarer ge-) — are themselves Low German imports (Low German be-, vor-). They are not native Norse; they arrived with the loanwords and then became productive, attaching to native roots as well.

This is why an advanced learner should treat the prefix system as its own topic: the prefixes change a verb's meaning in patterned ways precisely because they are a borrowed, semi-systematic layer. See Verb Prefixes and Prefixed Verbs.

The Gustav Vasa Bible and a written standard

Spoken Swedish varied enormously across provinces, but a written standard needed a model text with reach. It came with the Reformation. The New Testament appeared in Swedish in 1526, and the complete Bible — the Gustav Vasa Bible (Gustav Vasas bibel) — in 1541, named for the king who broke with Rome and backed the project.

Because it was the one book read aloud in every parish, the Gustav Vasa Bible became the de facto norm for written Swedish in administration, literature, and the church, and its conventions shaped the written language for roughly the next four centuries. This is conventionally taken as the boundary into Modern Swedish (nysvenska). The Bible fixed spellings and helped settle the language on the central-Swedish dialect base around Stockholm and Uppsala.

The 1906 spelling reform

For centuries the spelling lagged behind the pronunciation, preserving silent and historical letters. The decisive modernisation was the spelling reform of 1906, signed by education minister Fridtjuv Berg and adopted in schools from 1907. Two changes dominate, and you will meet both whenever you read pre-reform texts:

• The v-sound was henceforth written v, sweeping away the older spellings ⟨f⟩, ⟨fv⟩, ⟨hv⟩. So hvad became vad ("what"), hvit became vit ("white"), lefva became leva ("to live").
• The t-sound was written t or tt instead of dt. So godt became gott ("good," neuter), rödt became rött ("red," neuter).

The twentieth century: plural verbs and the du-reform

Two changes in living memory transformed the everyday language, and both matter for reading anything written before the mid-twentieth century.

The loss of plural verb agreement. Older Swedish, like German, inflected the verb for a plural subject: jag är but vi äro ("we are"); jag kom but de kommo ("they came"); jag var but de voro ("they were"). These plural forms died in speech long before they left the page. Through the 1930s and 1940s written prose increasingly abandoned them — novelists led the way — so that by mid-century de var had effectively replaced de voro in ordinary writing. The change was a gradual usage shift, not a single decree: the Swedish Academy did not formally sanction the singular-for-all pattern until 1973. Encountering plural verbs is therefore a reliable sign of an older or deliberately archaic text.

The du-reform (du-reformen). Swedish once had an elaborate system of polite address — titles, the third person, and ni — that made addressing a stranger socially fraught. Over the late 1960s, and associated above all with a 1967 push by the director-general of the National Board of Health and Welfare, Bror Rexed, Swedes rapidly switched to addressing nearly everyone with the familiar du. Within a few years the old deferential system collapsed. This is why modern Swedish feels strikingly egalitarian in address, and why ni as a polite singular now sounds either old-fashioned or, to some, oddly distancing.

The social side of address is its own topic; see The Du-Reform and Address within the register pages, and the Literary Register page for how older forms survive in elevated prose.

Common Mistakes

Key Takeaways

• Swedish descends from Old Norse; the earliest Swedish-specific texts are runestones and the thirteenth–fourteenth-century provincial laws (Old Swedish, with cases, three genders, and plural verbs).
• The Hanseatic era (13th–14th c.) poured Middle Low German into Swedish — the largest single loanword source, including everyday words (betala) and the be-/för- prefix system.
• The Gustav Vasa Bible (1541) fixed a written standard that lasted roughly four centuries and marks the start of Modern Swedish.
• The 1906 spelling reform gave us v (from f/fv/hv: hvad → vad) and tt (from dt: godt → gott).
• In the twentieth century, plural verb agreement disappeared from writing (the de voro → de var shift, settled in print by the 1940s, Academy-sanctioned 1973), and the du-reform (late 1960s) made the familiar du the universal form of address.