Analyzable as con- +‎ *fes +‎ -tim, built on the same root as the verb festīnō (to hasten). De Vaan, citing Schrijver, identifies the root as *bʰris-, alleged to also be the source of Welsh brys (speed, haste). If this etymology is correct, the Latin form developed a syllabic resonant (*-r〭-) which was then replaced with *-er-, and the resulting cluster *-rst- was then regularly simplified to -st- (compare testis). The ending comes from the adverbial accusative of a deverbal noun, which De Vaan reconstructs as Proto-Indo-European *bʰristi-, Proto-Italic *fristi- (haste).[1]





cōnfestim (not comparable)

  1. immediately, forthwith
    Synonyms: statim, extemplō, continuō, īlicō, repente, raptim, breviter, protinus
    • c. 69 CE – 122 CE, Suetonius, De vita Caesarum 2 10:
      Omnium bellōrum initium et causam hinc sūmpsit: nihil convenientius dūcēns quam necem avunculī vindicāre tuērīque ācta, cōnfestim ut Apollōniā rediit, Brūtum Cassiumque et vī necopīnantīs et, quia prōvīsum perīcu­lum subterfūgerant, lēgibus adgredī reōsque caedis absentīs dēferre statuit.
      The source and cause of all the wars he took from this: holding nothing more fitting than to avenge his uncle and maintain the validity of his enactments, immediately on returning from Apollonia he resolved to take the unexpecting Brutus and Cassius by force as well as to resort to laws and prosecute them for murder in their absence, as they had fled the foreseen danger.


  1. ^ De Vaan, Michiel (2008) “festīnō”, in Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill, →ISBN, page 216
  2. ^ Bennett, Charles E. (1907) The Latin Language: a historical outline of its sounds, inflections, and syntax, Boston: Allyn and Bacon, page 68

Further reading

  • confestim”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • confestim”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • confestim in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.