Etymologically

Etymology and origin of the German word zwei

Confidence
Established
Formation
Inherited
First attested
8th century, Old High German
Inherited from
Middle High German zwei
Ultimate origin
Proto-Indo-European (*dwóh₁)
Etymology tree
inherited borrowed derived
German zwei
German zweite

Pronunciation

  • /t͡svaɪ̯/, [t͡sʋaɪ̯], /t͡svo/[1]

Forms

zwei (cardinal number; genitive zweier, dative zweien when the case is not otherwise shown)[2][3] Until the 18th century, and in poets even later, three genders were distinguished: masculine zween, feminine zwo, neuter zwei.[3][4]

Etymology

It is inherited from Middle High German zwei, inherited from Old High German zwei, inherited from Proto-Germanic *twai (“two”).[5][1][6] The Old High German form was the neuter of an inflected numeral whose masculine was zwēne and feminine zwō or zwā.[5][4][1] The masculine form is a West Germanic distributive numeral, which Kluge reconstructs as Proto-West Germanic *twajina-, also in Old English twēgen and Old Frisian twēne.[5][4] The same numeral is Gothic 𐍄𐍅𐌰𐌹 (twai), Old Norse tveir and Old Saxon twēne, and it survives in Dutch twee, English two and Swedish två.[5][4]

It goes back to a dual form Proto-Indo-European *dwóh₁, which Kluge writes *dwōu.[1][5] The same numeral is Ancient Greek δύο (dúo), Latin duo, Old Irish dá, Welsh dau, Lithuanian dù, Russian два (dva) and Tocharian B wi.[5][4] Duden thinks the prefix zer- probably belongs to it.[7]

Earliest recorded meaning

Old High German zwēne, zwō, zwei is recorded from the 8th century.[5][4][8] The Hildebrandslied, the Isidor translation, the Benedictine Rule and Notker use it for “two” and “both”;[9] untar zwein meant “in doubt”.[9]

Semantic evolution

New High German kept the three genders until the 18th century, and writers mixed them: Paul quotes zwo Händ' und zwo Beine from Goethe and zwoer Herzen from Schiller.[3][4] Adelung recommended the neuter form, which finally prevailed.[3] The feminine zwo was revived for all genders on the telephone and in business, to avoid confusion with drei;[3][4][7] Paul dates this to the First World War, Pfeifer to the early 20th century.[3][4][7]

In the 14th century the ordinal zweite replaced the older ander “second”.[4][7] Many words were formed from the numeral, such as Zweifel (originally “twofold possibility”), Zweig (“forked branch”), Zwilling, Zwirn (“twofold thread”) and zwölf (“two over ten”).[7] The adjective zweideutig was coined by Harsdörffer in 1641 for Latin aequivocus, and Zweikampf by Zesen in 1645 for Latin duellum.[3]

Timeline

  • 8th century – Old High German zwēne, zwō, zwei is first recorded.[5][4]
  • 14th century – The ordinal zweiter replaces ander.[4]
  • 1641 – Harsdörffer coins zweideutig.[3]
  • 1645 – Zesen coins Zweikampf.[3]
  • 17th century – The adverb zweitens appears.[4]
  • 18th century – The neuter zwei becomes the form for all genders.[3][4]
  • Early 20th century – zwo is revived on the telephone.[4][3]

Meanings

Numeral

  1. Two, the number 2.[2][1]
  2. (colloquial) Two o'clock; two years old.[10]

Word family

  • zweite
  • zweitens
  • Zwei
  • entzwei
  • zweideutig
  • Zweikampf
  • zwanzig
  • zwölf
  • Zweifel
  • Zweig
  • Zwilling
  • Zwirn
  • zwischen
  • Zwist
  • Zwitter
  • Zuber
  • zwie-
  • zer-
  • Duo
  • English two

Usage notes

Für zwei means “for two, a great deal”: er isst für zwei “he eats enough for two”.[2] The noun Zwei is the figure 2, and in German schools the mark “good”.[2][1]

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Duden. Das große Wörterbuch der deutschen Sprache in zehn Bänden (1999), 3rd ed., Mannheim: Dudenverlag
  3. ^ a b c d e f g h i j k Paul, Hermann (2002), Deutsches Wörterbuch: Bedeutungsgeschichte und Aufbau unseres Wortschatzes, 10th ed., ed. Helmut Henne, Heidrun Kämper and Georg Objartel, Tübingen: Niemeyer
  4. ^ a b c d e f g h i j k l m n o Pfeifer, Wolfgang, et al. (1993), Etymologisches Wörterbuch des Deutschen, 2nd ed., Berlin: Akademie-Verlag; digital revised version in the DWDS, dwds.de
  5. ^ a b c d e f g h Kluge, Friedrich; Seebold, Elmar (2011), Etymologisches Wörterbuch der deutschen Sprache, 25th ed., Berlin / Boston: De Gruyter, p. 1019
  6. ^ Kroonen, Guus (2013), Etymological Dictionary of Proto-Germanic, Leiden Indo-European Etymological Dictionary Series 11, Leiden / Boston: Brill
  7. ^ a b c d e Duden. Das Herkunftswörterbuch: Etymologie der deutschen Sprache (2020), 6th ed., Duden vol. 7, Berlin: Dudenverlag, p. 958
  8. ^ Köbler, Gerhard (2014), Althochdeutsches Wörterbuch, 6th ed., online, koeblergerhard.de/wikiling
  9. ^ a b Schützeichel, Rudolf (2012), Althochdeutsches Wörterbuch, 7th ed., Berlin / Boston: De Gruyter, p. 412
  10. ^ Wiktionary, das freie Wörterbuch (German Wiktionary), de.wiktionary.org

Derived terms

Related etymologies

  • dass · also from Proto-Germanic
  • nach · also from Proto-Germanic
  • können · also from Proto-Germanic
  • bei · also from Proto-Germanic
  • auch · also from Proto-Germanic
  • er · also from Proto-Germanic
  • es · also from Proto-Germanic
  • nicht · also from Proto-Germanic
Cite this entry

“Zwei.” Etymologically, 20 Oct. 2026, etymologically.com/de/zwei. Accessed 20 Oct. 2026.

Last edited on . ·