Etymologically

Etymology and origin of the French word obscur

Confidence
Established
Formation
Borrowing
First attested
late 11th century, Chanson de Guillaume
Borrowed from
Latin obscurus
Ultimate origin
Latin obscūrus
Etymology tree
inherited borrowed derived
Latin obscurus
French obscur
Italian oscuro
From the same root
Latin obscure ← obscurus
Latin obscuritas ← obscurus
Latin obscuro ← obscurus

Pronunciation

Forms

obscur (feminine obscure, masculine plural obscurs, feminine plural obscures)[1] Old French oscur (late 11th century), obscur from the 12th century;[2][3][4] oscur remained the usual form until the 16th century and is still found in Ronsard.[2][3][4] Anglo-Norman also had escur and ouscur.[5]

Etymology

It is borrowed from Latin obscūrus (“dark, gloomy; hard to understand; unknown; hidden, secret”).[6][2][3][7] It was first written oscur, with the Latin ⟨b⟩ restored in the 12th century;[2][8] Wiktionary instead treats the word as inherited through Old French, the ⟨b⟩ coming from a learned relatinisation in Middle French.[1] In the 16th century it was still pronounced ⟨oscur⟩, according to Théodore de Bèze.[9]

The Latin word has no clear analysis;[2] Rey reports a proposal that it contains an element *-scūrus related to words for shade and cover, such as Old Norse skuggi (“shadow”), Old High German scuwo (“shadow”) and, through Norse, English sky.[2] Littré connected the same conjectured element with Latin scūtum (“shield”), so that the word would mean “covering all round”.[9] Its semantic opposite in Latin was clārus, the source of clair.[2]

Earliest recorded meaning

It is first found at the end of the 11th century in the Chanson de Guillaume, spelled oscur, meaning “without light, dark”.[4][2] The TLFi's first record of this sense is in the Roman d'Eneas (about 1160).[6]

Semantic evolution

In Old French the adjective was already used as a noun, l'oscur, for darkness (1160–1174, Wace), and of a dark colour (about 1165, Benoît de Sainte-Maure); in the colour sense it lost ground to sombre and foncé after the 17th century.[6][2] As a painters' term l'obscur is the dark part of a picture (1690, Furetière), as in clair-obscur.[6][2]

The figurative sense “hard to understand” is as old as the physical one (1160–1174, Wace).[6][2] In the 16th and 17th centuries the word came to mean “unknown, without renown” (1559, Amyot) and “of humble birth” (1611, Cotgrave), and the Port-Royal Logique (1662) used it actively of a person who understands poorly, a sense now lost.[6][2] Salles obscures for cinemas dates from 1917.[4][2]

Timeline

  • Late 11th century – Oscur in the Chanson de Guillaume.[4]
  • 1160–1174 – Wace uses it of something hard to understand, and as a noun for darkness.[6]
  • c. 1165 – Of a dark colour, in Benoît de Sainte-Maure.[6]
  • 1213 – The adverb obscurément.[3]
  • 1559 – Amyot uses it for “unknown, without renown”.[6]
  • 1611 – Cotgrave records the sense “of humble birth”.[6]
  • 1690 – Furetière records l'obscur as a painting term.[6]
  • 1917 – Salle obscure.[4]

Meanings

Adjective

  1. dark, without light or poorly lit: un couloir obscur, les salles obscures, cinemas.[10][6]
  2. Dark in colour, dim.[10][4]
  3. Hard to understand, obscure: un texte obscur.[10][1]
  4. Vague, not clearly felt or known: un obscur pressentiment.[4][6]
  5. Unknown, without fame; humble: un obscur fonctionnaire.[10][4]

Noun

  1. L'obscur: darkness; the dark parts of a picture.[6][10]

Word family

  • obscurcir
  • obscurément
  • obscurité
  • obscurcissement
  • obscurantisme
  • clair-obscur

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  3. ^ a b c d Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  4. ^ a b c d e f g h i Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  5. ^ Anglo-Norman Dictionary (AND2), Aberystwyth University, anglo-norman.net (2nd ed., 2005–)
  6. ^ a b c d e f g h i j k l m n 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
  7. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 7, 281a
  8. ^ Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  9. ^ a b Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  10. ^ a b c d e Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert

Related etymologies

Cite this entry

“Obscur.” Etymologically, 22 Oct. 2026, etymologically.com/fr/obscur. Accessed 23 Oct. 2026.

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