- Confidence
- Established
- Formation
- Derivation
- First attested
- Cicero
- Ultimate origin
- Proto-Indo-European (*loysh₂-)
Pronunciation
Forms
dēlīrātiō f (genitive dēlīrātiōnis); third declension[1]
Etymology
It is from Latin dēlīrō (“to go out of the furrow; to be crazy”) + -tiō, from dē- and līra “furrow”.[2][1][3] De Vaan reconstructs ⟨līra⟩ as Proto-Italic *loisā-, Proto-Indo-European *loysh₂- (“furrow, track”), cognate with Old Church Slavonic лѣха (lěxa, “field bed, furrow”) and Old High German leisa (“track”).[4]
Earliest recorded meaning
Köbler's earliest source is Cicero.[5] Köbler dates Cicero 81–43 BC.[5]
Semantic evolution
Its literal sense, the act of going off the ridges between furrows in harrowing, is in Pliny; figuratively it meant derangement, delirium, madness, folly, silliness, and dotage, as in Cicero.[2][3]
British Medieval Latin used it for erratic behaviour, folly.[6]
Timeline
- 81–43 BC – Cicero uses it of folly.[5][3]
- 23/24–79 AD – Pliny uses it of harrowing off the furrow.[2][5]
Meanings
Noun
Related words
References
- ^ a b c d 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 Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
- ^ 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 Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ 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
Cite this entry
“Deliratio.” Etymologically, 17 Oct. 2026, etymologically.com/la/deliratio. Accessed 17 Oct. 2026.
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