Etymology claims here follow the Oxford English Dictionary, the Online Etymology Dictionary (Etymonline), and for Old Norse specifically, de Vries' Altnordisches etymologisches Wörterbuch. Where etymologies are disputed or uncertain, this is noted. The number of Old Norse loanwords in English is an active area of historical linguistics — estimates range from around 600 basic vocabulary items to several thousand if specialized and archaic terms are included.
The Danelaw — How It Happened
The mass borrowing of Old Norse words into English happened during one specific historical period: the Danelaw, roughly 866–954 CE, when Norse settlers controlled much of northern and eastern England. The territory included Northumbria, East Anglia, and the Five Boroughs (Derby, Leicester, Lincoln, Nottingham, Stamford). At its height, a line roughly from London to Chester divided the Norse-settled north and east from the Anglo-Saxon south and west.
Old Norse and Old English were closely related. Speakers of both could communicate with some effort — they were not mutually intelligible in the way modern French and Italian are not, but more like modern Swedish and Norwegian. Speakers shared many roots, recognized each other's words, and borrowed freely. Centuries of contact produced a borrowing pattern unlike anything else in English linguistic history: not specialized vocabulary from a prestige language (like French after the Norman Conquest — law, cuisine, fashion terms), but basic, everyday vocabulary from a language spoken alongside English by neighbors, trading partners, and family members.
The Norse contribution to English is the vocabulary of ordinary life. That is its most remarkable feature.
The Sky and the Natural World
Sky — Old Norse ský (cloud). Old English had heofon (heaven). The Norse word displaced it for ordinary use. Every time English speakers say "sky," they are using the Norse word for "cloud."
Window — Old Norse vindauga: vindr (wind) + auga (eye). "Wind-eye" — the hole in the wall through which wind comes. Old English had ēagþyrel (eye-hole) and windēage (wind-eye, a calque — a direct translation). The Norse form won.
Fog — Old Norse fok (spray, shower, driving snow). Related to fjúka (to be blown by the wind).
Gust — Old Norse gustr (a cold blast of wind). Old English had no common equivalent word.
Storm — shared Germanic root, but the specific Old Norse stormr reinforced the English form and may have displaced Old English alternatives in the Danelaw area.
Cliff — Old Norse klif. Cliffs being most common in the Norse-settled north of England is not a coincidence.
Beck (a stream — still used in northern England) — Old Norse bekkr. The word "brook" is the Old English equivalent that survived in the south.
Fell (a moorland hill — still used in Cumbria, Yorkshire) — Old Norse fjall (mountain). Scafell, Helvellyn — the fell names of the Lake District are Norse.
The Human Body
Skin — Old Norse skinn. Old English had hȳd (hide — which survives but with different nuance). "Skin" is entirely Norse.
Leg — Old Norse leggr. Old English had scanca (shank — survives in "drumstick" and "shank of lamb" but not as the default word for leg). The Norse word is now the standard English term.
Skull — Old Norse skál (bowl, shell). The skull is "the bowl of the head." Related to the toast "skål" — drinking from a bowl.
Freckle — Old Norse freknur (plural). A borrowing from the Norse settlers of the north.
Calf (of the leg) — Old Norse kálfi. The young cow (calf) is Old English; the leg muscle is Norse. Two different words, same spelling.
Social Life and Relationships
Husband — Old Norse húsbóndi: hús (house) + bóndi (householder, farmer, freeholder). "House-dweller" or "master of the house." The Old English word for a male spouse was wer (man — survives in "werewolf") or simply the man's name. The Norse term for the social role became the English term for the marital one.
Law — Old Norse lǫg (plural of lag — something laid down). Old English had ǣ and rǣd for legal concepts. The Norse term for the thing-assembly's decisions displaced the Old English term and gave English its core legal vocabulary word.
They / Them / Their — Old Norse þeir / þeim / þeira. This is perhaps the most remarkable borrowing: English adopted the Norse third-person plural pronouns wholesale. Old English had hīe / him / hira, which were too similar to the singular forms (hē, him, his) and created ambiguity. The Norse pronouns, starting with "th-", were clearly distinct. Modern English "they / them / their" is Old Norse, used billions of times per day.
Same — Old Norse samr. Old English had ilca (the same one — survives only in "each"). "Same" is entirely Norse.
Happy — Old Norse happ (luck, good fortune). Originally "lucky"; the sense shifted to "contented" in Middle English. Related to "mishap" (bad luck) and "perhaps" (per + haps — through chances).
Anger — Old Norse angr (grief, sorrow, trouble). The Norse term broadened in English to include the feeling we now call anger. Old English had irre (ire — survives in formal use) and grama (wrath — survives in "gram" as an archaic intensifier).
Ugly — Old Norse uggligr: uggr (fear, dread) + -ligr (like). Originally meaning "dreadful, frightening" — the kind of ugly that scares you. The sense softened to "aesthetically unpleasant" in English. To call something ugly was once to say it inspired fear.
Die — Old Norse deyja (to die). Old English used sweltan (to die — survives in "swelter") and steorfan (to die of disease — survives in "starve," which has shifted meaning). The Norse word for death's basic verb is now the standard English term.
Tools, Objects, Animals
Knife — Old Norse knífr. The kn- initial cluster (both letters pronounced) is a Norse marker — Old English had seax (a short sword/knife). The Norse word displaced it.
Egg — Old Norse egg. Old English ǣg (the same word, different vowel). The Norse form won in competition with the Old English form — famously documented by William Caxton (the first English printer) who in 1490 described a merchant trying to buy eggs in Kent being misunderstood because the local dialect still used eyren (plural of ǣg) while the Northerner asked for eggs.
Bag — Old Norse baggi. Old English had poca (a bag — survives in "poke," as in "pig in a poke").
Skirt — Old Norse skyrta (a shirt, short garment). The Old English cognate is "shirt." Both words come from the same Germanic root, but Old Norse gave us "skirt" (longer, lower garment) while Old English gave us "shirt" (upper body garment). The two split from one word.
Bull — Old Norse boli. Old English had fearr (a bull — survives in archaic use). The Norse word is now the standard term.
Reindeer — Old Norse hreindýri: hreinn (reindeer) + dýr (animal). The animal itself was more familiar to Norse speakers than to Anglo-Saxons. The name came with the knowledge.
Berserk — Old Norse berserkr: ber- (bear) + serkr (shirt/coat). "Bear-shirt" — a warrior who wore a bear-skin and fought in a state of uncontrolled fury. Entered English as an adjective through literary tradition rather than Danelaw contact. One of the few Norse words that entered English carrying its mythological and historical weight intact.
Place Names — The Map That Tells the History
The Norse settlement of northern England is written in the map. Place-name elements are among the most durable linguistic evidence — places keep their names long after the language that named them has changed. Reading the map of northern England is reading the Viking Age settlement pattern.
- -by (Old Norse bær/býr — farm, settlement): Derby, Whitby, Grimsby, Selby, Rugby, Appleby. Over six hundred place names in England end in -by.
- -thorpe (Old Norse þorp — outlying farm, hamlet): Scunthorpe, Cleethorpes, Mablethorpe. Secondary settlements clustered around primary farms.
- -thwaite (Old Norse þveit — meadow, paddock): Braithwaite, Stonethwaite, Seathwaite. Concentrated in Cumbria and the Lake District.
- -toft (Old Norse topt — homestead): Lowestoft, Langtoft, Nortoft.
- -gate (Old Norse gata — street, road): Micklegate, Goodramgate, Gillygate — all streets in York. "Gate" in Yorkshire and Lincolnshire means street, not an entrance.
- -ness (Old Norse nes — headland): Skegness, Ravenscar area, Furness.
- -keld (Old Norse kelda — spring): Thirkeld, Keldholme. Springs being named in the Norse language of the settlers.
York itself was the Norse capital of the Danelaw: the Old Norse name Jórvík overlaid the earlier Roman and Anglo-Saxon names. "York" is the English reduction of the Norse name. The Jorvik Viking Centre sits on the archaeological site of the Norse city that traded with Dublin, hedged silver, and housed thousands — one of the major commercial centers of the Viking world, in the middle of what is now England.