Etymologically

Etymology and origin of the French word loir

Confidence
Established
Formation
Inherited
First attested
c. 1202 Roman de Renart More words from the 13th century
Inherited from
Latin *glis via Old French
Ultimate origin
Latin glīs

Pronunciation

Forms

loir m (plural loirs)[1] Old French also leir and lère.[1] Middle French glir (before 1563, La Boétie; 1565, Ronsard) keeps the initial ⟨g⟩.[2][3]

Etymology

It is inherited from Old French loir, inherited from Vulgar Latin *glĭs, glĭris, a popular form with a short /i/ beside Latin glīs (“dormouse”).[2][3][4][5] Late Latin forms such as glerus, cleres and lerus point to the same type, which dialect forms in Italy, Spain and Portugal also require.[2] The loss of the initial /g/ is hard to explain; the same thing happened in Old French luissel (“ball of thread”), from Vulgar Latin *globuscellum, and lemoissel, from *glomiscellum.[2][3][4][1] Rey adds that the Latin word has been compared with a Sanskrit word meaning mouse, and was linked by folk etymology with glīscō (“to swell, grow fat”), because the Romans fattened dormice to eat them.[3]

The classical form survives in Italian ghiro and in the Berry dialect word liron; Portuguese leirão goes back to the popular form.[4][3] Cognate also with Occitan glire and Spanish lirón.[6][7] The southern dialects have a type *glirulus instead.[4]

Earliest recorded meaning

It is first found about 1202 in the Roman de Renart, in the phrase dormant comme loir “sleeping like a dormouse”.[2][3]

Semantic evolution

The word has always named the small rodent.[3] The phrase dormir comme un loir “to sleep long and deeply” is found from the first texts, since sleep and the dormouse were already linked in Latin;[3][8] a 13th-century Barlaam et Josaphat by Gui de Cambrai describes two loirs, one white and one black, gnawing at the root of a tree.[6] In the 16th century Desportes still called the dormice happy because they sleep half the year.[6] From the long winter sleep come the figurative use of un loir for a lazy person, recorded by Littré, and paresseux comme un loir “extremely lazy” (1893).[6][8]

The Norman variant leir gave the name of a related animal, the lérot “garden dormouse” (1530, written leyrot).[3][4]

Timeline

  • c. 1202 – Dormant comme loir appears in the Roman de Renart.[2]
  • 13th century – Gui de Cambrai's Barlaam et Josaphat describes two dormice gnawing a root.[6]
  • 1530 – The derivative leyrot (modern lérot) is recorded.[3][4]
  • before 1563 – La Boétie uses the learned-looking form glir.[2][3]
  • 1565 – Ronsard also writes glir.[2]
  • 1893 – The Dictionnaire général records paresseux comme un loir.[8]

Meanings

Noun

  1. A dormouse, a small grey rodent with a bushy tail that lives in hollow trees, eats fruit and hibernates for several months.[9][2]
  2. (familiar) Dormir comme un loir: to sleep long and soundly.[9][8]
  3. (familiar) Paresseux comme un loir: extremely lazy.[8]
  4. (dated, figurative) A lazy person.[6]

Word family

  • lérot
  • liron

Usage notes

The river name Loir, a tributary of the Sarthe, is unrelated: Wiktionary traces it to a Medieval Latin name Ledo recorded in 616.[1]

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i Trésor de la langue française informatisé (2004), ATILF – CNRS & Université de Lorraine, atilf.fr/tlfi; electronic version of Imbs, Paul; Quemada, Bernard, eds. (1971–1994), Trésor de la langue française, Paris: CNRS / Gallimard
  3. ^ a b c d e f g h i j k Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  4. ^ a b c d e f Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  5. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 4, 155a
  6. ^ a b c d e f Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  7. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  8. ^ a b c d e Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  9. ^ a b Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert

Related etymologies

Cite this entry

“Loir.” Etymologically, 14 Nov. 2026, etymologically.com/fr/loir. Accessed 15 Nov. 2026.

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