- Confidence
- Established
- Formation
- Inherited
- First attested
- Naevius
- Inherited from
- Proto-Italic *swesōr-
- Ultimate origin
- Proto-Indo-European (*swésōr)
Pronunciation
Forms
soror f (genitive sorōris); third declension[1]
Etymology
It is inherited from Proto-Italic *swesōr- (“sister”), inherited from Proto-Indo-European *swésōr (“sister”).[2][1] Cognate with Old Irish siur (“sister”), Welsh chwaer (“sister”), Sanskrit स्वसृ (svásṛ, “sister”), Lithuanian sesuõ (“sister”) and English sister.[2][3] Latin generalized the suffix ⟨-ōr-⟩ throughout the paradigm, and sobrīnus “cousin” continues *swesr-īno-.[2]
Earliest recorded meaning
De Vaan and Köbler date it from Naevius.[2][4] Plautus has a man saying a girl is as safe with him as if she were his sister.[3] Köbler dates Naevius c. 235–200 BC.[4]
Semantic evolution
It was a sister, and in poetry the name for groups of mythological sisters, such as the Fates, the Muses (doctae sorōrēs, novem sorōrēs) and the Furies.[3][5] By transfer it was used of something closely related or similar to another, such as the other hand.[3] Isidore explains it as one born “of the same seed”.[6]
In Christian Latin it was a sister in Christ, a woman vowed to chastity, and especially the wife of a man who had become a priest.[7] Medieval Latin sorōritās “sisterhood” gave English sorority.[8] It survives in French sœur and Romanian soră, and Italian sorella is from its diminutive.[1]
Timeline
- c. 235–200 BC – Naevius uses it.[2][4]
- c. 250–184 BC – Plautus has “as if she were my sister”.[3][4]
- 65–8 BC – Horace speaks of the threads of the three Sisters, the Fates.[3][4]
- 1530s – English sorority is recorded.[8]
Meanings
Noun
- A sister.[3]
- (plural) A group of mythological sisters (the Fates, the Muses).[3][5]
- Something closely related or similar.[3]
- (Ecclesiastical Latin) A sister in Christ; a woman vowed to chastity.[7]
Word family
- sorōrcula
- sorōricīda
- sorōriō
- sorōrius
- sorōritās
Related words
- sobrīnus
- English sorority
- English sister
References
- ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e 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 i Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ a b Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
- ^ Isidore of Seville, Etymologiarum sive Originum libri XX, ed. W. M. Lindsay (Oxford, 1911).
- ^ a b Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
- ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Related etymologies
Cite this entry
“Soror.” Etymologically, 16 Oct. 2026, etymologically.com/la/soror. Accessed 16 Oct. 2026.
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