Etymologically

Etymology and origin of the Italian word leale

Confidence
Probable
Formation
Borrowing
First attested
1219 Breve di Montieri More words from the 13th century
Borrowed from
Occitan leial
Ultimate origin
Latin lex

Pronunciation

Forms

leale m or f by sense (plural leali)[1] Old forms include Old Italian liale, Old Italian leial, Old Italian leiale and Old Italian lial.[2][3][4]

Etymology

It is borrowed from Old Occitan leial (Old French has the same form, leial), the popular Gallo-Romance outcome of Latin lēgālis (“according to the law”).[5][6][7][1] DELI and Nocentini prefer Old Occitan.[5][6] GRADIT names both languages, and DEI, Devoto, Devoto–Oli and Treccani name Old French.[7][8][9][10][11] The TLIO does not rule out a direct derivation from Latin.[2]

The Latin adjective is formed from lex (“law”) with -alis.[12][1] The same word gave French loyal, Spanish leal and Portuguese leal, while the learned legale keeps the Latin form.[6][5][1] The English word leal is an older borrowing of the French one.[8][13]

Earliest recorded meaning

DELI's first record is the Breve di Montieri of 1219, in the sense of keeping one's word, promises and agreements.[5][7] Old texts, from the 13th century to Dante and later, still used the older sense “in keeping with the law” or “genuine”.[5][2]

Semantic evolution

The TLIO's oldest senses are “conforming to the laws” and “unadulterated, genuine”, beside the moral sense of acting honestly and in good faith, which it records also of a fair judge, of a loyal member of a faction, and of a faithful lover in courtly poetry.[2] Giamboni advises telling one's secret to a leale compagno and one's illness to a leale medico.[14]

The old sense “just, lawful” lived on in moneta leale (sound coin) and misura leale (honest measure), now archaic.[11][10] DELI records the sense “legal” again in 1764, in Genovesi.[5] The derivative lealtà is an Italian formation of the 13th century, while lealismo (1830, in a translation of Scott) is from French loyalisme.[5][6]

Timeline

  • 1219 – The Breve di Montieri uses leale “faithful to one's word”.[5]
  • Before 1294 – Latini and Guittone use lealtà.[5]
  • 1764 – Genovesi uses leale for “legal”.[5]
  • 1830 – Lealismo appears in a translation from English.[5]
  • 1926 – Lealista is recorded.[6]

Meanings

Adjective

  1. loyal, honest: acting with sincerity and fairness, without deceit or betrayal: È sempre stata leale con i colleghi.[7][10][15][1]
  2. faithful, devoted.[7][4]
  3. Showing fairness and sincerity; conducted by the rules, without tricks: una gara leale.[7][10][15]
  4. (archaic) Lawful, just; of a measure, exact; of a coin, not counterfeit.[7][10][11]

Word family

  • lealtà
  • lealmente
  • sleale
  • slealtà
  • disleale

Usage notes

Leale and legale are the same Latin word, one borrowed through Gallo-Romance and the other learned.[5][1] Zingarelli contrasts leale, said of keeping a pact between persons, with giusto, said of judging by shared norms.[3] The GDLI has an obsolete noun leale, the free strip along a river bank kept for navigation, which it derives from le, from Old French lé “width”.[16]

References

  1. ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Tesoro della Lingua Italiana delle Origini (1997–), Opera del Vocabolario Italiano, CNR, Firenze; tlio.ovi.cnr.it
  3. ^ a b Zingarelli, Nicola (2009), Lo Zingarelli 2010: vocabolario della lingua italiana, Bologna: Zanichelli
  4. ^ a b Gabrielli, Aldo (2020), Grande dizionario italiano, digital ed., Milano: Hoepli
  5. ^ a b c d e f g h i j k l Cortelazzo, Manlio; Zolli, Paolo (1999), Dizionario etimologico della lingua italiana, 2nd ed. by Manlio Cortelazzo and Michele A. Cortelazzo, Bologna: Zanichelli
  6. ^ a b c d e Nocentini, Alberto; Parenti, Alessandro (2010), l'Etimologico: vocabolario della lingua italiana, Firenze: Le Monnier
  7. ^ a b c d e f g De Mauro, Tullio (ed.) (2003), Grande dizionario italiano dell'uso, CD-ROM version 2.0, Torino: UTET
  8. ^ a b Battisti, Carlo; Alessio, Giovanni (1950–1957), Dizionario etimologico italiano, 5 vols., Firenze: Barbèra (reprint 1975), p. 2189
  9. ^ Devoto, Giacomo (1968), Avviamento alla etimologia italiana: dizionario etimologico, 2nd ed., Firenze: Le Monnier
  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 Duro, Aldo (ed.) (1986–1994), Vocabolario della lingua italiana, Roma: Istituto della Enciclopedia Italiana; online ed. treccani.it/vocabolario (2008 copy)
  12. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  13. ^ Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  14. ^ Battaglia, Salvatore; Bàrberi Squarotti, Giorgio (1961–2002), Grande dizionario della lingua italiana, 21 vols., Torino: UTET; digital ed. Accademia della Crusca, p. 8, 869
  15. ^ a b Sabatini, Francesco; Coletti, Vittorio; Manfredini, Manuela (2026), Dizionario italiano Sabatini Coletti, digital ed., Milano: Sansoni / Rizzoli Larousse
  16. ^ Battaglia, Salvatore; Bàrberi Squarotti, Giorgio (1961–2002), Grande dizionario della lingua italiana, 21 vols., Torino: UTET; digital ed. Accademia della Crusca, p. 8, 870

Related etymologies

Cite this entry

“Leale.” Etymologically, 14 Nov. 2026, etymologically.com/it/leale. Accessed 15 Nov. 2026.

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