Etymologically

temerarius

Etymology and origin of the Latin word temerarius

Confidence
Established
Formation
Derivation
First attested
c. 250–184 BC, Plautus
Ultimate origin
Proto-Indo-European (*temH-os-)

Pronunciation

  • Classical: [tɛ.mɛˈraː.ri.ʊs][1]
  • Ecclesiastical: [te.meˈraː.ri.us][1]

Forms

temerārius (feminine temerāria, neuter temerārium); first/second-declension adjective[1]

Etymology

It is formed from temere (“blindly, by chance, rashly”) with the suffix -ārius.[2][3][4] De Vaan explains ⟨temere⟩ as a fossilised locative of a noun ⟨*temes-⟩ “darkness”, from Proto-Indo-European *temH-os- (“darkness”), cognate with Sanskrit तमस् (támas, “darkness”) and Lithuanian tamsà (“darkness”).[5]

Earliest recorded meaning

De Vaan dates it from Plautus,[5] where a woodpecker tapping an elm is “not by chance”, an omen.[2][4]

Semantic evolution

Its first sense is happening by chance, accidental, which Lewis and Short call very rare, and in Celsus a method left to chance or risk.[2][4] The usual sense is of people acting thoughtlessly, reckless or hasty, as Terence's drunken and reckless midwife, and in poetry of rash weapons, as Ovid's.[2] Of conduct and plans it is reckless, impetuous or ill-considered, as Cicero's rash and sudden decision and the thoughtless stir of a Greek assembly.[2][1]

Church Latin glosses it “rash, thoughtless, casual”.[6] English temerarious, “rash, reckless”, is from it in the 1530s.[7]

Timeline

  • c. 250–184 BC – Plautus of an omen that is not by chance.[2][3]
  • 190–159 BC – Terence of a reckless woman.[2][3]
  • 81–43 BC – Cicero of a rash decision.[2][3]
  • 14–37 AD – Celsus of risky treatment.[2][3]
  • 1530s – English temerarious.[7]

Meanings

Adjective

  1. Happening by chance, accidental, casual; subject to risk.[2][4][1]
  2. Acting thoughtlessly, reckless, rash, hasty.[2][1][6]
  3. Of conduct or plans, impetuous, ill-considered.[2]

Word family

  • pertemerarius
  • temerāriē
  • temerātor
  • temere
  • temeritās
  • temeriter
  • temeritūdō
  • temerō
  • English temerity

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  4. ^ a b c d Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  5. ^ 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
  6. ^ a b Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  7. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Cite this entry

“Temerarius.” Etymologically, 19 Oct. 2026, etymologically.com/la/temerarius. Accessed 19 Oct. 2026.

Last edited on . ·