Etymology and origin of the Latin word ei
- Confidence
- Uncertain
- First attested
- c. 250–184 BC, Plautus
Forms
ei [1] It is also spelled hei.[2][1]
Etymology
It is an exclamation of grief, which the OLD compares with Ancient Greek αἴ (aí, “ah!”).[2] Köbler sets it beside a reconstructed interjection Proto-Indo-European *ēi (Pokorny 297).[3]
Earliest recorded meaning
Köbler gives Plautus as its first author,[3] who has ei, periī miser, “ah, I am lost, poor wretch”, in the Amphitruo.[4]
Semantic evolution
It expresses anguish or distress, especially in ei mihi! and ei miserō mihi!, “ah me!”, “woe is me!”.[2] It is frequent in comedy, in Plautus, Caecilius and Terence.[4][5]
Timeline
Meanings
Interjection
Usage notes
The same spelling is also the dative singular of is.[5]
References
- ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ a b c Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
- ^ a b c d Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
Cite this entry
“Ei.” Etymologically, 19 Oct. 2026, etymologically.com/la/ei. Accessed 19 Oct. 2026.
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