Etymologically

Etymology and origin of the Italian word fedeltà

Confidence
Established
Formation
Inherited
First attested
1260 Sienese letter More words from the 13th century
Inherited from
Latin fidelitas
Ultimate origin
Latin fidēs
Etymology tree
inherited borrowed derived
Latin fidēs
French foi
Italian fede
Spanish fe
Latin fidēlis
Italian fedele
Spanish fiel
Latin fidēlitās
Italian fedeltà
English fidelity
From the same root
Latin fidēiubeō ← fidēs
Latin fidicen ← fidēs
Latin perfidus ← fidēs
English infidel ← fidēlis
Latin fidēliter ← fidēlis
Latin īnfidēlis ← fidēlis
English fealty ← fidēlitās

Pronunciation

  • /fe.delˈta/[1]

Forms

fedeltà f (invariable)[1] Old forms include Old Italian fedeltade, Old Italian fedeltate, Old Italian fedaltà, Old Italian fedelità and Old Italian fidelità.[2][3]

Etymology

It is inherited from Latin fidēlitās (“faithfulness, loyalty”), through its accusative case.[4][5][6][1] GDLI calls it a learned word, while Wiktionary treats it as inherited and sets it beside the learned doublet fidelità.[3][1] In Latin the noun was formed from Latin fidēlis + -tās, and the adjective, “faithful”, comes from fidēs (“faith, trust”).[7][1][8]

The same Latin word gave Old French fealté, Old Occitan fezeltat, Spanish fieldad and Portuguese fieldade.[9][3] The Old Italian form fedaltà matches the Occitan and Old French forms.[3] The Old French word passed into English as fealty, recorded about 1300.[10][3]

Earliest recorded meaning

The first record is in a Sienese letter of 1260.[2] The TLIO's first sense is the virtue of someone always honest and correct towards another;[2][11] DELI's first dated sense, the quality of being faithful, is in Bono Giamboni before 1292.[2][11]

Semantic evolution

Old Italian used fedeltà for faithful relationships between people, for honesty in general, for faithfulness in marriage, and in politics for the loyalty of a subject or ally, including its formal ratification;[2] venire alla fedeltà meant to submit of one's own will to a lord.[2] In the feudal system it named the act by which a vassal bound himself to his lord.[5][8]

The sense of conformity to an original, as in a copy or a translation, is in Paolo Giovio in 1550.[11] Physics and electronics later took the word for the ability of a device to reproduce a signal without distortion, and alta fedeltà is high fidelity in sound reproduction.[5][8][12] Commerce has the carta fedeltà, a loyalty card.[13]

Timeline

  • 1260 – Fedeltà appears in a Sienese letter.[2]
  • Before 1292 – Bono Giamboni uses it for the quality of being faithful.[11]
  • c. 1300 – English fealty, from Old French, is first recorded.[10]
  • 1550 – Paolo Giovio uses it for faithfulness to an original.[11]

Meanings

Noun

  1. loyalty, faithfulness: being faithful to a person, an ideal or a promise;[5][8][6][1] fedeltà coniugale, marital fidelity.[5][8][6][1]
  2. Of an animal, attachment to its master.[5][14]
  3. Accuracy, exact conformity to the truth or to an original: la fedeltà della copia.[5][8][6][1]
  4. (physics, electronics) The ability of a device to reproduce a signal or sound without distortion;[5][8][12] alta fedeltà, high fidelity.[5][8][12]
  5. (history) In feudalism, the act by which a vassal pledged loyalty to his lord.[5][8]

Word family

  • infedeltà

Usage notes

The noun is invariable.[1][5] It takes the preposition a: fedeltà alla patria.[6][15]

References

  1. ^ a b c d e f g h i Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g Tesoro della Lingua Italiana delle Origini (1997–), Opera del Vocabolario Italiano, CNR, Firenze; tlio.ovi.cnr.it
  3. ^ a b c d e Battaglia, Salvatore; Bàrberi Squarotti, Giorgio (1961–2002), Grande dizionario della lingua italiana, 21 vols., Torino: UTET; digital ed. Accademia della Crusca, p. 5, 785
  4. ^ Nocentini, Alberto; Parenti, Alessandro (2010), l'Etimologico: vocabolario della lingua italiana, Firenze: Le Monnier
  5. ^ a b c d e f g h i j k De Mauro, Tullio (ed.) (2003), Grande dizionario italiano dell'uso, CD-ROM version 2.0, Torino: UTET
  6. ^ a b c d e Sabatini, Francesco; Coletti, Vittorio; Manfredini, Manuela (2026), Dizionario italiano Sabatini Coletti, digital ed., Milano: Sansoni / Rizzoli Larousse
  7. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  8. ^ a b c d e f g h i Devoto, Giacomo; Oli, Gian Carlo; Serianni, Luca; Trifone, Maurizio (2026), Nuovo Devoto–Oli: il vocabolario dell'italiano contemporaneo, digital ed., Milano: Le Monnier
  9. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  10. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  11. ^ 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
  12. ^ a b c Zingarelli, Nicola (2009), Lo Zingarelli 2010: vocabolario della lingua italiana, Bologna: Zanichelli
  13. ^ Gabrielli, Aldo (2020), Grande dizionario italiano, digital ed., Milano: Hoepli
  14. ^ Duro, Aldo (ed.) (1986–1994), Vocabolario della lingua italiana, Roma: Istituto della Enciclopedia Italiana; online ed. treccani.it/vocabolario (2008 copy)
  15. ^ Vocabolario della lingua italiana Treccani (2011), Roma: Istituto della Enciclopedia Italiana

Related etymologies

Cite this entry

“Fedeltà.” Etymologically, 10 Nov. 2026, etymologically.com/it/fedelt%C3%A0. Accessed 11 Nov. 2026.

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