Etymologically

Etymology and origin of the Old English word lengþu

Confidence
Established
Formation
Inherited
First attested
900–950 Old English Orosius More words from the 9th century
Ultimate origin
Proto-Germanic *langaz
Etymology tree
inherited borrowed derived
Old English lengþu
English length
From the same root
English lengthen ← lengþu
English lengthwise ← length
English lengthy ← length
English wavelength ← length

Pronunciation

  • /ˈlenɡ.θu/, [ˈleŋɡ.θu][1]

Forms

lengþu f (strong ō-stem; genitive singular lengþe, nominative plural lengþa)[1] Also written lengþ, lengoþu and lengþo.[1] Bosworth and Toller head the word lengþ.[2]

Etymology

It is inherited from Proto-Germanic *langiþō (“length”), an abstract noun made to the adjective *langaz (“long”), the source of Old English lang.[1][3][4] The same noun appears as Old Norse lengd and Old Frisian lengithe, and Köbler sets up Old Saxon *lengithi beside them;[3][5][4] Orel adds Middle Low German lengde.[3][5][4]

Köbler traces the adjective to Proto-Indo-European *dlongʰos (“long”) (Pokorny's root *del-).[5] Kroonen takes *langaz as a nasalised variant of the root seen in Proto-Indo-European *dlh₁gʰ- (“long”).[6]

Earliest recorded meaning

The first dated record is in the Old English Orosius, in the Tollemache manuscript of the early tenth century: of Alexander's successors it says that Seleucus on lengðe mid him he begeat ealle þa eastlond “in the course of time gained with them all the eastern lands”.[7][8] Bosworth and Toller read the phrase on lengþe here as “at length”.[2]

Semantic evolution

The word is rare in the corpus, with two occurrences in prose.[8] Its main sense is length, the extent of a thing from end to end: the Peterborough Chronicle, in the annal for 1122, has a fire that weax on lengþe up “grew in length upward” to the clouds.[2][8] Toller's Supplement adds the sense height, from a prose text of the Solomon and Saturn group that measures a mountain in ðǽre lengoðe.[9] The phrase on lengþe of the Orosius is used of time.[2]

The word lived on as Middle English lengthe, now English length.[1][10]

Timeline

  • s. x¹ or x²/⁴ – on lengðe “in the course of time” in the Old English Orosius (Tollemache manuscript).[7][8]
  • 1122 – weax on lengþe “grew in length” in the Peterborough Chronicle's annal for that year.[2][8]

Meanings

Noun

  1. length, extent from end to end.[2][5]
  2. height.[9]
  3. on lengþe: in the course of time, at length.[2]

Descendants

  • Middle English lengthe (→ English length; Middle Scots lenth; Middle Scots lenthe)[1]

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g Bosworth, Joseph; Toller, T. Northcote (1898), An Anglo-Saxon Dictionary, Oxford: Clarendon Press; Toller, T. Northcote (1921), Supplement, p. 629
  3. ^ a b c Orel, Vladimir (2003), A Handbook of Germanic Etymology, Leiden / Boston: Brill, p. 236
  4. ^ a b c Köbler, Gerhard (2014), Germanisches Wörterbuch, 5th ed., online, koeblergerhard.de/wikiling
  5. ^ a b c d Köbler, Gerhard (2014), Altenglisches Wörterbuch, 4th ed., online, koeblergerhard.de/wikiling, p. s.v. lėngþu
  6. ^ Kroonen, Guus (2013), Etymological Dictionary of Proto-Germanic, Leiden Indo-European Etymological Dictionary Series 11, Leiden / Boston: Brill, p. 327
  7. ^ a b Gneuss, Helmut; Lapidge, Michael (2014), Anglo-Saxon Manuscripts: A Bibliographical Handlist of Manuscripts and Manuscript Fragments Written or Owned in England up to 1100, Toronto: University of Toronto Press, p. 249
  8. ^ a b c d e Healey, Antonette diPaolo; Price Wilkin, John; Xiang, Xin, eds. (2009), Dictionary of Old English Web Corpus, Toronto: Dictionary of Old English Project
  9. ^ a b Bosworth, Joseph; Toller, T. Northcote (1898), An Anglo-Saxon Dictionary, Oxford: Clarendon Press; Toller, T. Northcote (1921), Supplement, p. Suppl. 611
  10. ^ Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Cite this entry

“Lengþu.” Etymologically, 16 Nov. 2026, etymologically.com/ang/leng%C3%BEu. Accessed 16 Nov. 2026.

Last edited on . ·