Etymology and origin of the Latin word iracundus
- Confidence
- Established
- Formation
- Derivation
- First attested
- c. 250–184 BC, Plautus
- Ultimate origin
- Latin (īra)
Forms
īrācundus (feminine īrācunda, neuter īrācundum, adverb īrācundē); first/second-declension adjective[1] Priscian records a spelling -ond-.[2]
Etymology
It is from Latin īra (“anger”) + -cundus.[3][1] De Vaan notes that the rare suffix ⟨-cundus⟩ cannot be original here and was taken over from other adjectives in ⟨-cundus⟩.[4] He derives ⟨īra⟩ from Proto-Italic *eis/ra- and Proto-Indo-European *h₁eis-h₂- (“anger”), cognate with Avestan aēšma- (“wrath”) and Ancient Greek οἶμα (oîma, “rush”), an etymology he accepts for want of a better one.[4]
Earliest recorded meaning
Köbler and the OLD date it from Plautus,[5] who has “a hot-tempered man of reckless mind”.[3]
Semantic evolution
It means prone to anger, irascible, and also angry at a given moment: in Plautus someone is told it is not for them to be angry at what was said in jest.[3] Seneca draws the distinction: an angry man need not be irascible, but an irascible man cannot help being angry at times.[6] Of actions it is marked by anger, as when Cicero says a victory would have been too wrathful.[3]
Isidore explained it as named from blood kindled into fury, with Hebrew ur “fire”.[2]
Timeline
- c. 250–184 BC – Plautus of a hot-tempered man.[3][5]
- 81–43 BC – Cicero of an angry victory.[3][5]
- 4 BC–65 AD – Seneca distinguishes it from īrātus.[6][5]
- c. 560–636 AD – Isidore's derivation.[2][5]
Meanings
Adjective
- Prone to anger, hot-tempered, irascible, irritable.[3][6][1]
- angry, enraged; of actions, marked by anger.[3][1]
Word family
Related words
Usage notes
Seneca's distinction is īrātus potest nōn esse īrācundus; īrācundus nōn potest aliquandō īrātus nōn esse.[6]
References
- ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
- ^ a b c d e f g h 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 Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ a b c d Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
Derived terms
Cite this entry
“Iracundus.” Etymologically, 19 Oct. 2026, etymologically.com/la/iracundus. Accessed 20 Oct. 2026.
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