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See also: de certo



From dē- +‎ certō.



dēcertō (present infinitive dēcertāre, perfect active dēcertāvī, supine dēcertātum); first conjugation

  1. I fight (to the finish)
  2. I contend, dispute or argue
    • 100 BCE – 44 BCE, Julius Caesar, Commentarii de Bello Gallico 1.44
      Si iterum experiri velint, se iterum paratum esse decertare; si pace uti velint, iniquum esse de stipendio recusare, quod sua voluntate ad id tempus pependerint.
      If they chose to make a second trial, he was ready to encounter them again; but if they chose to enjoy peace, it was unfair to refuse the tribute, which of their own free-will they had paid up to that time.


   Conjugation of decerto (first conjugation)
indicative singular plural
first second third first second third
active present dēcertō dēcertās dēcertat dēcertāmus dēcertātis dēcertant
imperfect dēcertābam dēcertābās dēcertābat dēcertābāmus dēcertābātis dēcertābant
future dēcertābō dēcertābis dēcertābit dēcertābimus dēcertābitis dēcertābunt
perfect dēcertāvī dēcertāvistī dēcertāvit dēcertāvimus dēcertāvistis dēcertāvērunt, dēcertāvēre
pluperfect dēcertāveram dēcertāverās dēcertāverat dēcertāverāmus dēcertāverātis dēcertāverant
future perfect dēcertāverō dēcertāveris dēcertāverit dēcertāverimus dēcertāveritis dēcertāverint
passive present dēcertor dēcertāris, dēcertāre dēcertātur dēcertāmur dēcertāminī dēcertantur
imperfect dēcertābar dēcertābāris, dēcertābāre dēcertābātur dēcertābāmur dēcertābāminī dēcertābantur
future dēcertābor dēcertāberis, dēcertābere dēcertābitur dēcertābimur dēcertābiminī dēcertābuntur
perfect dēcertātus + present active indicative of sum
pluperfect dēcertātus + imperfect active indicative of sum
future perfect dēcertātus + future active indicative of sum
subjunctive singular plural
first second third first second third
active present dēcertem dēcertēs dēcertet dēcertēmus dēcertētis dēcertent
imperfect dēcertārem dēcertārēs dēcertāret dēcertārēmus dēcertārētis dēcertārent
perfect dēcertāverim dēcertāverīs dēcertāverit dēcertāverīmus dēcertāverītis dēcertāverint
pluperfect dēcertāvissem dēcertāvissēs dēcertāvisset dēcertāvissēmus dēcertāvissētis dēcertāvissent
passive present dēcerter dēcertēris, dēcertēre dēcertētur dēcertēmur dēcertēminī dēcertentur
imperfect dēcertārer dēcertārēris, dēcertārēre dēcertārētur dēcertārēmur dēcertārēminī dēcertārentur
perfect dēcertātus + present active subjunctive of sum
pluperfect dēcertātus + imperfect active subjunctive of sum
imperative singular plural
first second third first second third
active present dēcertā dēcertāte
future dēcertātō dēcertātō dēcertātōte dēcertantō
passive present dēcertāre dēcertāminī
future dēcertātor dēcertātor dēcertantor
non-finite forms active passive
present perfect future present perfect future
infinitives dēcertāre dēcertāvisse dēcertātūrus esse dēcertārī dēcertātus esse dēcertātum īrī
participles dēcertāns dēcertātūrus dēcertātus dēcertandus
verbal nouns gerund supine
nominative genitive dative/ablative accusative accusative ablative
dēcertāre dēcertandī dēcertandō dēcertandum dēcertātum dēcertātū


  • decerto in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • decerto in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • decerto in Gaffiot, Félix (1934) Dictionnaire Illustré Latin-Français [Illustrated Latin-French Dictionary], Hachette
  • Carl Meissner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • to fight a decisive battle: proelio, armis decertare (B. G. 1. 50)



de +‎ certo.



decerto (not comparable)

  1. certainly