Etymologically

Etymology and origin of the German word Januar

Confidence
Established
Formation
Borrowing
First attested
18th century (Latin form from the 16th century)
Borrowed from
Latin Ianuarius

Pronunciation

  • /ˈjanuaːr/, [ˈja.nuˌaː(ɐ̯)], [-ˌaːʁ][1]

Forms

Januar m (genitive Januars or Januar, plural Januare)[1] Until the 18th century the month was usually called by its Latin name Januarius, inflected with Latin endings (im Januario).[2][3][4] The endingless Januar spread in the second half of the 18th century;[3][2] Lessing uses it from 1753.[3][2]

Etymology

It is a learned borrowing, borrowed from Latin Iānuārius (“of Janus”), short for mēnsis Iānuārius (“the month of Janus”).[5][2][1] The Latin name is usually connected with that of the old Italic god Iānus, god of doors, of going in and out, and so of beginnings,[2][6][7] but Kluge points out that neither the connection nor the reason for the name is certain.[5] Pfeifer and the Duden take the god's name as a personification of iānus (“passage, archway”), compare iānua (“house door”).[2][6] The year began with this month only after the Roman calendar was reformed; earlier it had begun in March.[2][6]

An older borrowing of the same month name is Jänner, Middle High German jenner, Old High German jenner, taken from the variant Vulgar Latin Iēnuārius.[5][2][4] The same learned word is Dutch januari, English January, French janvier and Swedish januari.[5]

Earliest recorded meaning

The older form is recorded first: Old High German jenner is found only in a damaged gloss of the 12th century, translating Latin ianuarius.[4][8] The Latin Ianuarius itself was in German use from the humanist period.[4]

Semantic evolution

Jänner (Middle High German jener, jenner) was long current all over Upper German and was also found in Central and Low German.[4] From the 17th and 18th centuries the newly borrowed Januar, promoted by scholars, pushed it back into the southern dialects; it remains standard in Austria.[4][9][2] Büchner's Lenz still uses Jänner in its first sentence.[9]

Before the Roman names were adopted, Adelung records, the month was called Wintarmanoth “winter month”, a name ascribed to Charlemagne by Rabanus Maurus and Einhard.[10] The god's name has given German janusköpfig “two-faced, ambiguous” and, in the late 20th century, Januswort for a word with opposite senses.[9]

Timeline

  • 12th century – Old High German jenner appears in a gloss.[4][2]
  • 16th century – Humanists use the Latin Januarius with Latin endings.[4]
  • 1753 – Lessing uses the endingless Januar.[3]
  • Second half of the 18th century – Januar becomes the general form and Jänner retreats to the south.[2][6]

Meanings

Noun

  1. January, the first month of the year: Im Januar fahren wir in die Berge.[11][1]
  • Jänner
  • English January

Usage notes

In Austria and in Upper German dialects the older form Jänner is used.[9][5] The abbreviation is Jan.[11]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k Pfeifer, Wolfgang, et al. (1993), Etymologisches Wörterbuch des Deutschen, 2nd ed., Berlin: Akademie-Verlag; digital revised version in the DWDS, dwds.de
  3. ^ a b c d Grimm, Jacob; Grimm, Wilhelm (1854–1961), Deutsches Wörterbuch, 16 vols. in 32, Leipzig: Hirzel; digital: Wörterbuchnetz, Trier Center for Digital Humanities, p. 10, 2264
  4. ^ a b c d e f g h Lloyd, Albert L.; Springer, Otto; Lühr, Rosemarie, et al. (1988–), Etymologisches Wörterbuch des Althochdeutschen, Göttingen: Vandenhoeck & Ruprecht; online ewa.saw-leipzig.de, p. 5, 284
  5. ^ a b c d e Kluge, Friedrich; Seebold, Elmar (2011), Etymologisches Wörterbuch der deutschen Sprache, 25th ed., Berlin / Boston: De Gruyter, p. 454
  6. ^ a b c d Duden. Das Herkunftswörterbuch: Etymologie der deutschen Sprache (2020), 6th ed., Duden vol. 7, Berlin: Dudenverlag, p. 401
  7. ^ Wahrig-Burfeind, Renate, ed., Wahrig Herkunftswörterbuch, Gütersloh / München: Wissen Media Verlag; online edition at wissen.de
  8. ^ Althochdeutsches Wörterbuch (1952–), founded by Elisabeth Karg-Gasterstädt and Theodor Frings, Sächsische Akademie der Wissenschaften zu Leipzig, Berlin: Akademie-Verlag / De Gruyter; online awb.saw-leipzig.de, p. 4, 1810
  9. ^ a b c d Paul, Hermann (2002), Deutsches Wörterbuch: Bedeutungsgeschichte und Aufbau unseres Wortschatzes, 10th ed., ed. Helmut Henne, Heidrun Kämper and Georg Objartel, Tübingen: Niemeyer
  10. ^ Adelung, Johann Christoph (1793–1801), Grammatisch-kritisches Wörterbuch der Hochdeutschen Mundart, 2nd ed., 4 vols., Leipzig: Breitkopf
  11. ^ a b Duden. Das große Wörterbuch der deutschen Sprache in zehn Bänden (1999), 3rd ed., Mannheim: Dudenverlag

Related etymologies

Cite this entry

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

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