Etymologically

consiliarius

Etymology and origin of the Latin word consiliarius

Confidence
Established
Formation
Derivation
First attested
c. 250–184 BC, Plautus
Ultimate origin
Latin (cōnsilium)
Etymology tree
inherited borrowed derived
Latin consilium
French conseil
Latin consiliarius
French conseiller

Pronunciation

  • Classical: [kõː.sɪ.liˈaː.ri.ʊs][1]
  • Ecclesiastical: [kon.si.liˈaː.ri.us][1]

Forms

cōnsiliārius (feminine cōnsiliāria, neuter cōnsiliārium); first/second-declension adjective[1] As a noun it is masculine, genitive cōnsiliāriī, second declension.[2][1]

Etymology

It is from Latin cōnsilium (“counsel, deliberation”) + -ārius.[2][1] De Vaan derives the noun from cōnsul and takes the verb cōnsulō (“to deliberate, consult”) as the oldest member of the group; it goes back to Proto-Italic *kom-se/ol-e/o- (“to consult”), perhaps from Proto-Indo-European *s(e)lh₁-e/o- (“to take”).[3]

Earliest recorded meaning

The adjective is first found in Plautus, who has magis cōnsiliārius … amīcus quam auxiliārius, “a friend who gives advice rather than help”;[4][5][6] Köbler records the noun first in Cicero.[7]

Semantic evolution

The adjective, “giving advice”, stayed rare: Gellius has it of people, Apuleius of the soul, and Seneca of a kind of lightning that warns for or against an undertaking.[4][6][8] The noun, an adviser or one who shares a person's counsels, is common from Sisenna and Cicero on,[2][5] who also uses it of the interpreters of a god's will.[8] Under the Empire it was the assessor who sat with a magistrate in court,[2][8] and a member of the emperor's council, in Suetonius, Ulpian and inscriptions.[2][8] Ecclesiastical Latin used it for an adviser and a judge,[9] and in Medieval Latin it was a city councillor[10] or a member of a papal, royal, monastic or town council.[11] Italian consigliere came through conseiller.[8]

Timeline

  • c. 250–184 BC – Plautus uses the adjective.[4][5][7]
  • 81–43 BC – Cicero uses the noun of a man's friends and advisers.[5][7]
  • c. 75–c. 150 AD – Suetonius uses it of an assessor and of the emperor's council.[2][8][7]
  • before 223 AD – Ulpian uses it of the emperor's counsellors.[2][7]
  • Medieval Latin – It means a city councillor.[10]

Meanings

Adjective

  1. Giving advice, counselling.[2][4]

Noun

  1. An adviser, counsellor; one who shares another's counsels.[2][6]
  2. An assessor who sits with a magistrate.[2][8]
  3. A member of the emperor's council.[2][8]
  4. (Medieval Latin) A city councillor; a member of a council.[10][11]

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 j k Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  4. ^ a b c d Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  5. ^ a b c d Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  6. ^ a b c Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  7. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  8. ^ a b c d e f g h Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
  9. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  10. ^ a b c Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  11. ^ a b Latham, R. E., D. R. Howlett, R. K. Ashdowne, et al. (1975–2013), Dictionary of Medieval Latin from British Sources, London: British Academy / Oxford University Press

Descendants

Cite this entry

“Consiliarius.” Etymologically, 20 Oct. 2026, etymologically.com/la/consiliarius. Accessed 20 Oct. 2026.

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