- Confidence
- Established
- Formation
- Derivation
- First attested
- Cicero
- Ultimate origin
- Proto-Indo-European (*sen-)
Pronunciation
Forms
senior m (genitive seniōris); third declension[1]
Etymology
It is the comparative of senex “old”,[2][1] whose base is Proto-Italic *seno- (“old”), from Proto-Indo-European *sen-(o-) (“old”).[3]
Compare Old Irish sen (“old”) and Sanskrit सन (sána, “old”).[3][1]
Earliest recorded meaning
Köbler dates it from Cicero (81–43 BC),[4] who says that hardly anyone was older than Cato in his time.[2]
Semantic evolution
As an adjective it meant older or elder, and comparatively old, as Virgil's “older Acestes”.[2] As a noun it meant an older man, and in the Roman census and army the seniores were the men above military age, over forty-five.[2]
In Christian Latin it was used of elders and presbyters, and in Medieval Latin it became a title of rank: a lord, a feudal lord, a husband, an abbot or prior.[4][1] From this came Italian signore, French seigneur and Spanish señor, and through Vulgar Latin *seior English sire and sir.[1][5] English senior was borrowed in the late 13th century, first as “the elder”.[5]
Timeline
- 81–43 BC – Cicero uses it of age.[2][4]
- 70–19 BC – Virgil calls Acestes the older man.[2][4]
- 666 – A charter uses senior for an abbess.[4]
- late 13th century – English senior is recorded.[5]
- c. 1300 – English sir is recorded as a title.[5]
Meanings
Adjective
Noun
- An older man, (plural) the men above military age.[2][1]
- (Christian Latin) An elder, presbyter.[4]
- (Medieval Latin) A lord, feudal lord; a husband.[4][1]
- (Medieval Latin) An abbot, prior.[1][4]
Related words
References
- ^ a b c d e f g h i j k l Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f g h i Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ a b de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
- ^ a b c d e f g h Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Borrowed into
- English senior
Cite this entry
“Senior.” Etymologically, 15 Oct. 2026, etymologically.com/la/senior. Accessed 15 Oct. 2026.
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