Etymologically

iracundus

Etymology and origin of the Latin word iracundus

Confidence
Established
Formation
Derivation
First attested
c. 250–184 BC, Plautus
Ultimate origin
Latin (īra)
Etymology tree
inherited borrowed derived
Latin ira
Latin iracundus
Latin iracundia
Latin iratus

Pronunciation

  • Classical: [iː.raːˈkʊn.dʊs][1]
  • Ecclesiastical: [i.raˈkun.dus][1]

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

  1. Prone to anger, hot-tempered, irascible, irritable.[3][6][1]
  2. angry, enraged; of actions, marked by anger.[3][1]

Word family

Usage notes

Seneca's distinction is īrātus potest nōn esse īrācundus; īrācundus nōn potest aliquandō īrātus nōn esse.[6]

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  3. ^ a b c d e f g h Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  4. ^ 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
  5. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ 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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