Etymologically

Etymology and origin of the Italian word supporre

Confidence
Established
Formation
Borrowing
First attested
14th century
Borrowed from
Latin suppono
Ultimate origin
Latin pōnō
Etymology tree
inherited borrowed derived
Latin suppono
French supposer
Italian supporre

Pronunciation

  • /supˈpor.re/[1]

Forms

supporre (first-person singular present suppóngo, first-person singular past historic suppósi, past participle suppósto or suppòsto, first-person singular imperfect supponévo, auxiliary avére)[1] Older and literary forms are sopporre, soporre and supponere.[2]

Etymology

It is borrowed from Latin suppōnere (“to put under; to substitute”), a compound of sub (“under”) and pōnō (“to put, place”).[3][4][2][1] The infinitive was refashioned on the native porre, as Devoto notes.[5][6] Nocentini glosses the Latin verb “to place under; to suppose”, also in the sense “to substitute by deceit”.[4] Meyer-Lübke and Körting set the learned verb “to make a hypothesis” beside the inherited Old Italian sopporre (“to subject, put under”); Spanish suponer is the same verb, while French supposer was remade on poser.[7][8][4]

De Vaan derives pōnō from an older Proto-Italic *po-sine/o- (“to put down”), a compound of the verb sinō (“to let, allow”): hence the old perfect ⟨posīvī⟩.[9]

Earliest recorded meaning

DELI's first record of the sense “to imagine that something has happened or may happen in a certain way” is an Old Italian translation of Saint Augustine, perhaps of the 14th century, and it notes earlier records of other senses.[3] GDLI quotes Dante's Convivio: Nulla scienza dimostra lo proprio subietto, ma suppone quello (“No science proves its own subject, but presupposes it”).[2]

Semantic evolution

The older senses, “to put under” and “to replace (one person or thing) with another”, are now archaic.[6][10][11] DEI records supporre in the sense “put under, put in another's place” from the 16th century.[12] The sense “to suppose, conjecture” is well attested from Galileo, before 1642.[3] The noun supposizione is recorded before 1406, in Francesco da Buti.[3]

From the participle came supposta, a suppository (before 1320), and in the 20th century supponente “presumptuous, arrogant” (1973) and supponenza (1980).[4]

Timeline

  • Before 1320 – Supposta “suppository” is recorded.[4]
  • 14th century – The verb is recorded in the sense “to assume”.[3][6]
  • Before 1406 – Francesco da Buti uses supposizione.[3]
  • Before 1642 – Galileo uses supporre “to suppose”.[3]
  • 1973 – Supponente is recorded.[4]

Meanings

Verb

  1. (transitive) To suppose, to assume as a hypothesis: Supponiamo che domani piova.[6][10][11]
  2. (transitive) To presume, to believe: Suppongo che tu sia stanco.[6][10][1]
  3. (transitive, archaic) To put under.[6][10]
  4. (transitive, archaic) To substitute one person or thing for another.[6][10][11]

Word family

  • supposizione
  • supposto
  • supposta
  • supponente
  • supponenza
  • presupporre
  • suppositorio

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c Battaglia, Salvatore; Bàrberi Squarotti, Giorgio (1961–2002), Grande dizionario della lingua italiana, 21 vols., Torino: UTET; digital ed. Accademia della Crusca
  3. ^ a b c d e f g Cortelazzo, Manlio; Zolli, Paolo (1999), Dizionario etimologico della lingua italiana, 2nd ed. by Manlio Cortelazzo and Michele A. Cortelazzo, Bologna: Zanichelli
  4. ^ a b c d e f Nocentini, Alberto; Parenti, Alessandro (2010), l'Etimologico: vocabolario della lingua italiana, Firenze: Le Monnier
  5. ^ Devoto, Giacomo (1968), Avviamento alla etimologia italiana: dizionario etimologico, 2nd ed., Firenze: Le Monnier
  6. ^ a b c d e f g De Mauro, Tullio (ed.) (2003), Grande dizionario italiano dell'uso, CD-ROM version 2.0, Torino: UTET
  7. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  8. ^ Körting, Gustav (1907), Lateinisch-romanisches Wörterbuch: etymologisches Wörterbuch der romanischen Hauptsprachen, 3rd ed., Paderborn: Schöningh
  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. ^ 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
  11. ^ a b c Sabatini, Francesco; Coletti, Vittorio; Manfredini, Manuela (2026), Dizionario italiano Sabatini Coletti, digital ed., Milano: Sansoni / Rizzoli Larousse
  12. ^ Battisti, Carlo; Alessio, Giovanni (1950–1957), Dizionario etimologico italiano, 5 vols., Firenze: Barbèra (reprint 1975), p. 3680

Related etymologies

  • no · also from Latin
  • cosa · also from Latin
  • a · also from Latin
  • mio · also from Latin
  • uno · also from Latin
  • si · also from Latin
  • sapere · also from Latin
  • fare · also from Latin
Cite this entry

“Supporre.” Etymologically, 21 Oct. 2026, etymologically.com/it/supporre. Accessed 22 Oct. 2026.

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