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Alternative forms[edit]


From ex- (out of) +‎ faciō (do, make).



efficiō (present infinitive efficere, perfect active effēcī, supine effectum); third conjugation iō-variant

  1. I make or work out; effect, execute, complete, accomplish, make, form, compose.
  2. I cause to occur, bring about, effect.
  3. I produce, bear, yield.
  4. I yield, bear, amount to, make out.
  5. (philosophy) I make out, show, prove, deduce.


   Conjugation of efficio (third conjugation -variant)
indicative singular plural
first second third first second third
active present efficiō efficis efficit efficimus efficitis efficiunt
imperfect efficiēbam efficiēbās efficiēbat efficiēbāmus efficiēbātis efficiēbant
future efficiam efficiēs efficiet efficiēmus efficiētis efficient
perfect effēcī effēcistī effēcit effēcimus effēcistis effēcērunt, effēcēre
pluperfect effēceram effēcerās effēcerat effēcerāmus effēcerātis effēcerant
future perfect effēcerō effēceris effēcerit effēcerimus effēceritis effēcerint
passive present efficior efficeris, efficere efficitur efficimur efficiminī efficiuntur
imperfect efficiēbar efficiēbāris, efficiēbāre efficiēbātur efficiēbāmur efficiēbāminī efficiēbantur
future efficiar efficiēris, efficiēre efficiētur efficiēmur efficiēminī efficientur
perfect effectus + present active indicative of sum
pluperfect effectus + imperfect active indicative of sum
future perfect effectus + future active indicative of sum
subjunctive singular plural
first second third first second third
active present efficiam efficiās efficiat efficiāmus efficiātis efficiant
imperfect efficerem efficerēs efficeret efficerēmus efficerētis efficerent
perfect effēcerim effēcerīs effēcerit effēcerīmus effēcerītis effēcerint
pluperfect effēcissem effēcissēs effēcisset effēcissēmus effēcissētis effēcissent
passive present efficiar efficiāris, efficiāre efficiātur efficiāmur efficiāminī efficiantur
imperfect efficerer efficerēris, efficerēre efficerētur efficerēmur efficerēminī efficerentur
perfect effectus + present active subjunctive of sum
pluperfect effectus + imperfect active subjunctive of sum
imperative singular plural
first second third first second third
active present effice efficite
future efficitō efficitō efficitōte efficiuntō
passive present efficere efficiminī
future efficitor efficitor efficiuntor
non-finite forms active passive
present perfect future present perfect future
infinitives efficere effēcisse effectūrus esse efficī effectus esse effectum īrī
participles efficiēns effectūrus effectus efficiendus
verbal nouns gerund supine
nominative genitive dative/ablative accusative accusative ablative
efficere efficiendī efficiendō efficiendum effectum effectū

Derived terms[edit]

Related terms[edit]



  • efficio in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • efficio in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • efficio in Gaffiot, Félix (1934) Dictionnaire Illustré Latin-Français, Hachette
  • Carl Meissner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • God made the world: deus mundum aedificavit, fabricatus est, effecit (not creavit)
    • Fortune makes men shortsighted, infatuates them: fortuna caecos homines efficit, animos occaecat
    • to obtain a result in something: aliquid efficere, consequi in aliqua re (De Or. 1. 33. 152)
    • to draw a conclusion from a thing: concludere, colligere, efficere, cogere ex aliqua re
    • the conclusion proves that..: ratio or rationis conclusio efficit
    • it follows from this that..: ex quo, unde, hinc efficitur ut
    • to form two legions: efficere duas legiones
    • to build a ship, a fleet: navem, classem aedificare, facere, efficere, instituere