Etymologically

celeritas

Etymology and origin of the Latin word celeritas

Confidence
Established
Formation
Derivation
First attested
86/82 BC, Rhetorica ad Herennium
Ultimate origin
Proto-Indo-European (*kel-i-)
Etymology tree
inherited borrowed derived
Latin celer
Latin celeriter
Latin celeritas

Pronunciation

  • Classical: [kɛˈɫɛ.rɪ.taːs][1]
  • Ecclesiastical: [t͡ʃeˈlɛː.ri.tas][1]

Forms

celeritās f (genitive celeritātis); third declension[1]

Etymology

It is formed from Latin celer (“swift”) + -tās.[2][1] De Vaan traces celer to Proto-Italic *keli- and Proto-Indo-European *kel-i- (“speeding”), cognate with Ancient Greek κέλομαι (kélomai, “to urge on”) and κέλης (kélēs, “racehorse”).[3] A Late Latin grammarian explained such nouns as formed from the dative, ⟨celerī⟩ → ⟨celeritās⟩.[4]

Earliest recorded meaning

Köbler's first source is the Rhetorica ad Herennium, which recommends the greatest speed (maximā celeritāte) in passages of amplification.[5][2] The OLD's main citations for speed of movement are Cicero's: in the Topica the opposite of celeritās is slowness, not weakness.[2]

Semantic evolution

It is first the speed of a body or a thing (Cicero's ship of incredible speed under sail), then speed of action and dispatch, as in Cicero's hoc bellum indiget celeritātis, “this war needs speed”.[2] It is used of the swift passing of time (a pain is made bearable by its brevity) and of quickness of mind, which Cicero says shows itself in replying.[2] In a bad sense it is excessive haste: Livy has a speaker say that nothing is so hostile to deliberation on a weighty matter as haste.[2] It can also mean earliness, as of a speedy return.[2] Cicero defines it as the bodily quality that is also praised in the mind, and Lewis & Short give vēlōcitās and pernīcitās as near-synonyms and tarditās as its opposite.[6]

Celeritās also appears as a goddess in Martianus Capella.[4] English celerity came through Old French in the late 15th century.[7]

Timeline

  • 86/82 BC – Rhetorica ad Herennium of speed in speaking.[2][5]
  • 81–43 BC – Cicero of speed of movement, action and mind.[2][5]
  • 59 BC–17 AD – Livy of rash haste.[2][5]
  • late 15th century – English celerity, through Old French.[7]

Meanings

Noun

  1. speed, swiftness, quickness of movement.[2][1][8]
  2. Speed of action, dispatch; quickness in passing.[2]
  3. Quickness of mind.[2]
  4. Excessive speed, haste.[2]
  5. Earliness, speediness (of an event).[2]

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  4. ^ a b Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  5. ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  7. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  8. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
Cite this entry

“Celeritas.” Etymologically, 18 Oct. 2026, etymologically.com/la/celeritas. Accessed 19 Oct. 2026.

Last edited on . ·