Etymologically

sonnolento

Etymology and origin of the Italian word sonnolento

Confidence
Established
Formation
Borrowing
First attested
1313–1319 Dante, Purgatorio More words from the 14th century
Borrowed from
Latin somnolentus
Ultimate origin
Latin somnus
Etymology tree
inherited borrowed derived
Latin somnus
Catalan son
French somme
Italian sonno
Romanian somn
Spanish sueño
Italian sonnolento
From the same root
Latin īnsomnis ← somnus
Latin īnsomnium ← somnus
Latin sēmisomnus ← somnus
Latin somniculus ← somnus

Pronunciation

  • /son.noˈlɛn.to/[1]

Forms

sonnolento (feminine sonnolenta, masculine plural sonnolenti, feminine plural sonnolente)[1] The old and literary form is sonnolente, shaped by the participles in -ente.[2][3][4]

Etymology

It is a learned word: it is borrowed from Late Latin somnolentus (“heavy with sleep, drowsy”), a word of Apuleius.[5][6][2][3] The Latin adjective, also written somnulentus, is from Latin somnus (“sleep”) with the suffix -olentus (“full of”).[7][1][8] Wiktionary takes the noun back to Proto-Indo-European *swépnos, and de Vaan to Proto-Italic *swepno- or *swopno-.[1][9]

French somnolent and Spanish somnolento are learned words too; Romanian somnoros continues the Latin word with another suffix.[10][11]

Earliest recorded meaning

The first record is in Dante's Purgatorio (1313–1319): stava com'om che sonnolento vana (“I stood like one who rambles drowsily”).[12][6] The sense is drowsy, full of sleep.[12]

Semantic evolution

The active sense, “causing sleep”, appears in the 14th century in Ser Giovanni's sonnolente pozione (“sleeping draught”).[12][13] Cavalca compares a negligent prelate to a ship's pilot sonnolento al tempo della tempesta (“drowsy in a storm”).[6][13]

The figurative use for something slow, still or lifeless is literary: Leopardi's sonnolenta aura and Carducci's gorgo sonnolento (“sluggish whirlpool”).[8][14] In modern use a town or a summer afternoon may be sonnolento, quiet and lacking life or making one sleepy.[15][4][3]

Timeline

  • 1313–1319 – Dante uses sonnolento in the Purgatorio.[12]
  • 14th century – Ser Giovanni uses sonnolente for “causing sleep”.[12]

Meanings

Adjective

  1. sleepy, drowsy; also showing sleepiness: aveva gli occhi sonnolenti.[15][4][8][1]
  2. (figurative) Sluggish, inactive, torpid: un borgo sonnolento di provincia.[15][4][3]
  3. Causing sleep, soporific: una sonnolenta mattina d'agosto.[15][3][4]

Word family

  • sonnolenza
  • sonnolentamente

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b Battisti, Carlo; Alessio, Giovanni (1950–1957), Dizionario etimologico italiano, 5 vols., Firenze: Barbèra (reprint 1975), p. 3544
  3. ^ a b c d e Devoto, Giacomo; Oli, Gian Carlo; Serianni, Luca; Trifone, Maurizio (2026), Nuovo Devoto–Oli: il vocabolario dell'italiano contemporaneo, digital ed., Milano: Le Monnier
  4. ^ a b c d e Sabatini, Francesco; Coletti, Vittorio; Manfredini, Manuela (2026), Dizionario italiano Sabatini Coletti, digital ed., Milano: Sansoni / Rizzoli Larousse
  5. ^ Nocentini, Alberto; Parenti, Alessandro (2010), l'Etimologico: vocabolario della lingua italiana, Firenze: Le Monnier
  6. ^ a b c Battaglia, Salvatore; Bàrberi Squarotti, Giorgio (1961–2002), Grande dizionario della lingua italiana, 21 vols., Torino: UTET; digital ed. Accademia della Crusca, p. 19, 411
  7. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  8. ^ a b c Duro, Aldo (ed.) (1986–1994), Vocabolario della lingua italiana, Roma: Istituto della Enciclopedia Italiana; online ed. treccani.it/vocabolario (2008 copy)
  9. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  10. ^ Körting, Gustav (1907), Lateinisch-romanisches Wörterbuch: etymologisches Wörterbuch der romanischen Hauptsprachen, 3rd ed., Paderborn: Schöningh
  11. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  12. ^ a b c d e Cortelazzo, Manlio; Zolli, Paolo (1999), Dizionario etimologico della lingua italiana, 2nd ed. by Manlio Cortelazzo and Michele A. Cortelazzo, Bologna: Zanichelli
  13. ^ a b Tommaseo, Niccolò; Bellini, Bernardo (1861–1879), Dizionario della lingua italiana, 4 vols., Torino: UTET
  14. ^ Gabrielli, Aldo (2020), Grande dizionario italiano, digital ed., Milano: Hoepli
  15. ^ a b c d De Mauro, Tullio (ed.) (2003), Grande dizionario italiano dell'uso, CD-ROM version 2.0, Torino: UTET

Related etymologies

Cite this entry

“Sonnolento.” Etymologically, 14 Nov. 2026, etymologically.com/it/sonnolento. Accessed 15 Nov. 2026.

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