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From Proto-Italic *perifakjō. Equivalent to per- (through, along; during) +‎ faciō (do, make).



perficiō (present infinitive perficere, perfect active perfēcī, supine perfectum); third conjugation iō-variant

  1. to finish, complete
    Synonyms: perpetrō, dēfungor, cōnficiō, agō, cumulō, absolvō, inclūdō, claudō, conclūdō, condō, expleō, fungor, peragō, efficiō, patrō, nāvō, exsequor, trānsigō, gerō, prōflīgō, perferō, persolvō, exhauriō
    • 27 BCE – 25 BCE, Titus Livius, Ab Urbe Condita 26.1:
      Prorogatum et M. Marcello, ut pro consule in Sicilia reliqua belli perficeret eo exercitu quem haberet: []
      And the military command of Marcus Marcellus was also extended, so that he could finish the rest of the war in Sicily as proconsul with his army which he held []
  2. to perfect
  3. to carry out, execute, perform
  4. to achieve, accomplish
  5. (by extension) to bring about, cause, effect


   Conjugation of perficiō (third conjugation -variant)
indicative singular plural
first second third first second third
active present perficiō perficis perficit perficimus perficitis perficiunt
imperfect perficiēbam perficiēbās perficiēbat perficiēbāmus perficiēbātis perficiēbant
future perficiam perficiēs perficiet perficiēmus perficiētis perficient
perfect perfēcī perfēcistī perfēcit perfēcimus perfēcistis perfēcērunt,
pluperfect perfēceram perfēcerās perfēcerat perfēcerāmus perfēcerātis perfēcerant
future perfect perfēcerō perfēceris perfēcerit perfēcerimus perfēceritis perfēcerint
passive present perficior perficeris,
perficitur perficimur perficiminī perficiuntur
imperfect perficiēbar perficiēbāris,
perficiēbātur perficiēbāmur perficiēbāminī perficiēbantur
future perficiar perficiēris,
perficiētur perficiēmur perficiēminī perficientur
perfect perfectus + present active indicative of sum
pluperfect perfectus + imperfect active indicative of sum
future perfect perfectus + future active indicative of sum
subjunctive singular plural
first second third first second third
active present perficiam perficiās perficiat perficiāmus perficiātis perficiant
imperfect perficerem perficerēs perficeret perficerēmus perficerētis perficerent
perfect perfēcerim perfēcerīs perfēcerit perfēcerīmus perfēcerītis perfēcerint
pluperfect perfēcissem perfēcissēs perfēcisset perfēcissēmus perfēcissētis perfēcissent
passive present perficiar perficiāris,
perficiātur perficiāmur perficiāminī perficiantur
imperfect perficerer perficerēris,
perficerētur perficerēmur perficerēminī perficerentur
perfect perfectus + present active subjunctive of sum
pluperfect perfectus + imperfect active subjunctive of sum
imperative singular plural
first second third first second third
active present perfice perficite
future perficitō perficitō perficitōte perficiuntō
passive present perficere perficiminī
future perficitor perficitor perficiuntor
non-finite forms active passive
present perfect future present perfect future
infinitives perficere perfēcisse perfectūrum esse perficī perfectum esse perfectum īrī
participles perficiēns perfectūrus perfectus perficiendus,
verbal nouns gerund supine
genitive dative accusative ablative accusative ablative
perficiendī perficiendō perficiendum perficiendō perfectum perfectū

Derived terms[edit]

Related terms[edit]


  • Asturian: perfacer
  • French: parfaire
  • Italian: perfare
  • Portuguese: perfazer
  • English: perfect


  • perficio”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • perficio”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • perficio in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
  • Carl Meißner, Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • to bring to the highest perfection: perficere et absolvere
    • to terminate a war (by force of arms and defeat of one's opponents): bellum conficere, perficere
  • perficio in Ramminger, Johann (2016 July 16 (last accessed)) Neulateinische Wortliste: Ein Wörterbuch des Lateinischen von Petrarca bis 1700[2], pre-publication website, 2005-2016