Etymologically

Etymology and origin of the French word spéculer

Confidence
Established
Formation
Borrowing
First attested
1345 More words from the 14th century
Borrowed from
Latin speculor
Ultimate origin
Latin speciō
Etymology tree
inherited borrowed derived
Latin speciō
Latin specula
Latin speculor
French spéculer
Spanish especular
From the same root
Latin aspiciō ← speciō
Latin circumspiciō ← speciō
Latin cōnspectus ← speciō
Latin cōnspiciō ← speciō
Latin cōnspicor ← speciō
Latin dēspiciō ← speciō
Latin dispiciō ← speciō
Latin haruspex ← speciō
Latin īnspiciō ← speciō
Latin intrōspiciō ← speciō
Latin perspiciō ← speciō
Latin prōspiciō ← speciō
Latin respiciō ← speciō
Latin retrospiciō ← speciō
Latin speciēs ← speciō
Latin specimen ← speciō
Latin spectō ← speciō
Latin spectrum ← speciō
Latin spectus ← speciō
Latin speculum ← speciō
Latin suspiciō ← speciō
Romanian aștepta ← speciō
Romanian specie ← speciō
Latin speculātiō ← speculor
Latin speculātīvus ← speculor
Latin speculātor ← speculor
Spanish especulador ← especular

Pronunciation

Forms

spéculer[1] Middle French also had especuler (about 1488, in philosophy).[2][3]

Etymology

It is borrowed from Latin speculor (“to observe, watch, spy”), a learned borrowing recorded in 1345.[2][4][5][6][7] The Latin verb is formed from specula (“lookout place, height”), from the archaic verb speciō (“to look”),[2][5][8] the source also of spectacle and spéculaire.[2]

Earliest recorded meaning

It first meant “to observe, consider, try to see into with the mind”: Jean d'Arkel's Li ars d'amour (mid-14th century) speaks of avisant et especulant cele science, and Oresme (1370–72) of speculer et cognoistre the multitude of laws.[6]

Semantic evolution

The Latin sense “to observe natural phenomena”, especially the stars (1461), lasted until the 18th century;[2][8] Furetière (1690) still gives it as an astronomical term.[2][8] Like spéculer qqn “to look at someone” (1530), it then went out of use.[2] From the mid-14th century the verb was a term of philosophy, “to meditate”, also spéculer sur (Christine de Pizan, 1404).[2][6] From 1690 it meant to build theories, as opposed to putting them into practice.[2][3]

At the end of the 18th century, following spéculation, it entered the language of commerce: Robespierre in 1792 writes spéculer sur la misère publique, and the Académie (1798) records spéculer sur les matières de banque.[2][6][4] By extension spéculer sur quelque chose came to mean to count on it to succeed (1835).[2][8]

Timeline

  • 1345 – First recorded, in the sense “to observe”.[2][4][5]
  • 1370–72 – Oresme uses it in his translation of Aristotle's Ethics.[6][3]
  • 1404 – Christine de Pizan writes speculer sus plus occultes choses.[6]
  • 1461 – It is used of observing the stars.[2]
  • c. 1488 – The variant especuler appears.[2]
  • 1690 – It means to theorize, as opposed to practise.[2]
  • 1792 – Robespierre uses it of profiting from public hardship.[6][2]
  • 1798 – The Académie records it as a banking term.[6][4]
  • 1835 – Spéculer sur “to count on” is recorded by the Académie.[2][8]

Meanings

Verb

  1. (philosophy) To meditate, to think abstractly or theorize.[9][3][8]
  2. To speculate: to carry out financial or commercial operations to profit from market changes, as in spéculer en Bourse, spéculer à la hausse or spéculer à la baisse.[9][6]
  3. Spéculer sur: to count on something to succeed or to gain an advantage.[9][2]
  4. (obsolete) To observe closely, especially the stars.[3][8]

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o p q r Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  3. ^ a b c d e Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  4. ^ a b c d Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  5. ^ a b c Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  6. ^ 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
  7. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 12, 161a
  8. ^ a b c d e f g Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  9. ^ a b c Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert

Related etymologies

Cite this entry

“Spéculer.” Etymologically, 15 Nov. 2026, etymologically.com/fr/sp%C3%A9culer. Accessed 15 Nov. 2026.

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