Etymologically

exitiosus

Etymology and origin of the Latin word exitiosus

Confidence
Established
Formation
Derivation
First attested
81–43 BC, Cicero
Ultimate origin
Proto-Indo-European (*h₁ei-)
Etymology tree
inherited borrowed derived
Latin exitium
Latin exitiosus

Pronunciation

  • Classical: [ɛk.sɪ.tiˈoː.sʊs][1]
  • Ecclesiastical: [eɡ.zit.t͡siˈɔː.s̬us][1]

Forms

exitiōsus (feminine exitiōsa, neuter exitiōsum); first/second-declension adjective[1] It is also spelled exsitiōsus.[2]

Etymology

It is from Latin exitium (“destruction”) + -ōsus.[3][1] exitium comes from exeō (“to go out”), a compound of eō (“to go”),[4] which de Vaan traces to Proto-Italic *ei- (“to go”) and Proto-Indo-European *h₁ei- (“to go”).[5] Isidore explained the word as “that which is destruction to many”.[2]

Earliest recorded meaning

Köbler and Lewis & Short find it first in Cicero, who uses it of the Catilinarian conspiracy.[4][6]

Semantic evolution

It means causing death or destruction, pernicious, deadly.[3][1] Lewis & Short call it rare but classical: Cicero speaks of a ruinous conspiracy and of a slaughter that would have been fatal to the state.[6] An ancient list of synonyms groups it with perīculōsus, pestifer and perniciōsus.[2]

Timeline

  • 81–43 BC – Cicero of a deadly conspiracy.[6][4]
  • c. 560–636 AD – Isidore of Seville explains the word.[2][4]

Meanings

Adjective

  1. Destructive, pernicious, deadly, ruinous.[3][6][1]

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  3. ^ a b c Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  4. ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  6. ^ a b c d Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
Cite this entry

“Exitiosus.” Etymologically, 19 Oct. 2026, etymologically.com/la/exitiosus. Accessed 20 Oct. 2026.

Last edited on . ·