Etymologically

Etymology and origin of the French word similaire

Confidence
Established
Formation
Derivation
First attested
1515 Jean Falcon and A. Romeri, Notables sur le Guidon More words from the 16th century
From
Latin similis
Ultimate origin
Latin similis
Etymology tree
inherited borrowed derived
Latin similis
Italian simile
French similaire
English similar
Romanian similar
From the same root
Latin assimilis ← similis
Latin cōnsimilis ← similis
Latin dissimilis ← similis
Latin similiter ← similis
Latin similitudo ← similis
Latin simulō ← similis
Latin vērīsimilis ← similis
English dissimilar ← similar
English similarity ← similar

Forms

similaire (plural similaires)[1]

Etymology

It is a learned formation from Latin similis (“like, resembling”) with the suffix -aire.[2][3][4] Wiktionary instead takes it from the extended Medieval Latin form similāris.[1]

Rey traces the Latin adjective to an older form *semilis, whose old neuter survives as the adverb simul (“at the same time”), and links it to the Indo-European root Proto-Indo-European *sem- (“one”), which also expressed sameness.[5][4] In Old Occitan the Latin word gave semble (“alike”), a form seen only rarely in Old French.[5]

Earliest recorded meaning

It is first recorded in 1515 as a term of anatomy, “of the same nature”, in Jean Falcon and A. Romeri's Notables sur le Guidon, where a part of the body is called consemblable, ou similaire.[2] Other dictionaries date it from 1539, in the phrase parties similaires, the basic tissues that make up the body's systems and join to form its organs.[5][6]

Semantic evolution

The word began in medicine and anatomy, where it meant “homogeneous, made of like parts”, as in Paré about 1560.[5][3] In the 18th century it was used in physics, of rays of light, and in mathematics with the sense “proportional”.[5]

The everyday sense “more or less of the same kind as something else” is recorded by Cotgrave in 1611 but stayed rare until the 19th century.[2][6][5] Political economy took it up in 1871 for home products of the same kind as imported ones, and it was then also used as a noun.[5]

English similar (1610s) was taken from the French word.[7]

Timeline

  • 1515 – First recorded in anatomy, “of the same nature”.[2]
  • 1539 – Parties similaires names the basic tissues of the body.[5][6]
  • c. 1560 – Paré uses it for “homogeneous” in anatomy.[5][3]
  • 1610s – English borrows it as similar.[7]
  • 1611 – Cotgrave records the sense “like something else”.[2][6]
  • 1721 – Used in physics and in mathematics (“proportional”).[5]
  • 1755 – The derivative similarité appears.[5]
  • 1871 – Taken up in political economy for products of the same kind.[5]

Meanings

Adjective

  1. More or less of the same kind or nature as something else, comparable: des outils similaires.[8][9][10]
  2. (obsolete) Homogeneous, made of parts of the same nature.[8][6]

Word family

  • similarité

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e 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 Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  4. ^ a b Picoche, Jacqueline (1991), Dictionnaire étymologique du français, Paris: Le Robert (Les Usuels du Robert)
  5. ^ a b c d e f g h i j k l Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  6. ^ a b c d e Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  7. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  8. ^ a b Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  9. ^ Dictionnaire Le Robert en ligne, dictionnaire.lerobert.com (accessed 2024)
  10. ^ Dictionnaire de français Larousse, larousse.fr/dictionnaires/francais (accessed 2024)

Related etymologies

Cite this entry

“Similaire.” Etymologically, 14 Nov. 2026, etymologically.com/fr/similaire. Accessed 15 Nov. 2026.

Last edited on . ·