Etymologically

Etymology and origin of the German word heiß

Confidence
Established
Formation
Inherited
First attested
9th century, Old High German glosses
Inherited from
Middle High German heiz
Ultimate origin
Proto-Germanic (*haitaz)

Pronunciation

Forms

heiß (strong nominative masculine singular heißer, comparative heißer, superlative am heißesten)[1]

Etymology

It is inherited from Middle High German heiz, inherited from Old High German heiz, inherited from Proto-West Germanic *hait, inherited from Proto-Germanic *haitaz (“hot”).[2][1][3] The same word is Old Saxon hēt, Dutch heet, Old English hāt, whence hot, Old Frisian hēt, Old Norse heitr and Swedish het;[2][4][5] Gothic has only the ablauting noun Gothic 𐌷𐌴𐌹𐍄𐍉 (heito, “fever”).[2][4][5]

Kluge derives it from a d-extension of Proto-Indo-European *kai- (“to burn”), seen with a t-extension in Lithuanian kaĩsti (“to heat, become hot”) and without extension in Old High German gihei (“heat, drought”); it may be the same root as *kai- “to shine” (see heiter).[2][4] The EWA describes the adjective as formed with a suffix to hei (“heat, blight”).[6] Kroonen sees an o-grade adjective of a root *keid-, which implies an unrecorded strong verb, and finds no certain cognates outside Germanic.[3]

Earliest recorded meaning

Old High German heiz appears in glosses from about the middle of the 9th century and in Otfrid, Notker and Williram, meaning “hot, glowing, burning, fiery, violent”;[6][7] heizêr tag was a hot summer day, and heiz wesan meant “to lie close to one's heart”.[6][7] Compounds such as heizherzi are recorded as early as the 8th century.[2]

Semantic evolution

Heiß and kalt are set against each other from Middle High German on.[8] Figuratively the word describes strong feeling, as in Luther's heiße Tränen or the heißes Bemühn of Goethe's Faust.[8] It also describes a pleasant warmth, as of a bath or soup in Stieler, and something new or current, and in sport a strong contender, as in heißer Favorit.[8]

In the 20th century it took over several senses of English hot: of music “exciting”, of goods “stolen, illegal”, and of films or clothes “provocative”, and heißer Draht renders hot line.[9][8] Heißhunger is a back-formation of the later 17th century from heißhungrig, and Heißsporn was A. W. Schlegel's rendering, in 1800, of Shakespeare's Hotspur.[4]

Timeline

  • 8th century – Compounds such as heizherzi are recorded.[2]
  • Mid-9th century – Old High German heiz appears in glosses.[6]
  • First half of the 17th century – heißhungrig is recorded.[4]
  • Second half of the 17th century – Heißhunger is formed from it.[4]
  • 1800 – Schlegel renders Hotspur as Heißsporn.[4]
  • 20th century – Senses borrowed from English hot appear.[9]

Meanings

Adjective

  1. Very warm, of a high temperature; hot: Der Sand am Strand war glühend heiß.[10][1]
  2. Fierce, heated: ein heißer Streit um die Steuern.[10]
  3. Felt with great intensity; ardent: Sein heißester Traum ist ein eigenes Pferd.[10]
  4. Exciting, provocative: heiße Musik;[10][9] ein heißes Kleid.[10][9]
  5. (colloquial) Dangerous, full of conflict: Das Thema ist politisch heiß.[10]
  6. (nuclear physics) Highly radioactive.[10]
  7. Of animals, in heat;[1][11] (informal) of people, sexually aroused.[1][11]

Word family

  • Heißhunger
  • Heißsporn
  • brühheiß
  • siedend heiß
  • Hitze
  • heizen
  • heiter
  • English hot

Usage notes

Es überläuft jemanden heiß und kalt means that someone shudders, and weder heiß noch kalt describes something unsatisfactorily half-hearted.[10] Heiß auf etwas sein is colloquial for being keen on it.[10]

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f Kluge, Friedrich; Seebold, Elmar (2011), Etymologisches Wörterbuch der deutschen Sprache, 25th ed., Berlin / Boston: De Gruyter, p. 407
  3. ^ a b Kroonen, Guus (2013), Etymological Dictionary of Proto-Germanic, Leiden Indo-European Etymological Dictionary Series 11, Leiden / Boston: Brill
  4. ^ a b c d e f g 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 Lloyd, Albert L.; Springer, Otto; Lühr, Rosemarie, et al. (1988–), Etymologisches Wörterbuch des Althochdeutschen, Göttingen: Vandenhoeck & Ruprecht; online ewa.saw-leipzig.de
  6. ^ a b c d Lloyd, Albert L.; Springer, Otto; Lühr, Rosemarie, et al. (1988–), Etymologisches Wörterbuch des Althochdeutschen, Göttingen: Vandenhoeck & Ruprecht; online ewa.saw-leipzig.de, p. 4, 915
  7. ^ a b Schützeichel, Rudolf (2012), Althochdeutsches Wörterbuch, 7th ed., Berlin / Boston: De Gruyter, p. 146
  8. ^ 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
  9. ^ a b c d Duden. Das Herkunftswörterbuch: Etymologie der deutschen Sprache (2020), 6th ed., Duden vol. 7, Berlin: Dudenverlag, p. 363
  10. ^ a b c d e f g h i Duden. Das große Wörterbuch der deutschen Sprache in zehn Bänden (1999), 3rd ed., Mannheim: Dudenverlag
  11. ^ a b Wiktionary, das freie Wörterbuch (German Wiktionary), de.wiktionary.org

Related etymologies

  • geschehen · also from Proto-Germanic
  • Gewalt · also from Proto-Germanic
  • toll · also from Proto-Germanic
  • Macht · also from Proto-Germanic
  • Winter · also from Proto-Germanic
  • sammeln · also from Proto-Germanic
  • besetzen · also from Proto-Germanic
  • See · also from Proto-Germanic
Cite this entry

“Heiß.” Etymologically, 20 Oct. 2026, etymologically.com/de/hei%C3%9F. Accessed 20 Oct. 2026.

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