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  1. first-person singular present indicative form of firmar



firmo (accusative singular firmon, plural firmoj, accusative plural firmojn)

  1. (business) firm




From firmus.



firmō (present infinitive firmāre, perfect active firmāvī, supine firmātum); first conjugation

  1. I make firm, strengthen, harden, fortify.


   Conjugation of firmō (first conjugation)
indicative singular plural
first second third first second third
active present firmō firmās firmat firmāmus firmātis firmant
imperfect firmābam firmābās firmābat firmābāmus firmābātis firmābant
future firmābō firmābis firmābit firmābimus firmābitis firmābunt
perfect firmāvī firmāvistī firmāvit firmāvimus firmāvistis firmāvērunt, firmāvēre
pluperfect firmāveram firmāverās firmāverat firmāverāmus firmāverātis firmāverant
future perfect firmāverō firmāveris firmāverit firmāverimus firmāveritis firmāverint
passive present firmor firmāris, firmāre firmātur firmāmur firmāminī firmantur
imperfect firmābar firmābāris, firmābāre firmābātur firmābāmur firmābāminī firmābantur
future firmābor firmāberis, firmābere firmābitur firmābimur firmābiminī firmābuntur
perfect firmātus + present active indicative of sum
pluperfect firmātus + imperfect active indicative of sum
future perfect firmātus + future active indicative of sum
subjunctive singular plural
first second third first second third
active present firmem firmēs firmet firmēmus firmētis firment
imperfect firmārem firmārēs firmāret firmārēmus firmārētis firmārent
perfect firmāverim firmāverīs firmāverit firmāverīmus firmāverītis firmāverint
pluperfect firmāvissem firmāvissēs firmāvisset firmāvissēmus firmāvissētis firmāvissent
passive present firmer firmēris, firmēre firmētur firmēmur firmēminī firmentur
imperfect firmārer firmārēris, firmārēre firmārētur firmārēmur firmārēminī firmārentur
perfect firmātus + present active subjunctive of sum
pluperfect firmātus + imperfect active subjunctive of sum
imperative singular plural
first second third first second third
active present firmā firmāte
future firmātō firmātō firmātōte firmantō
passive present firmāre firmāminī
future firmātor firmātor firmantor
non-finite forms active passive
present perfect future present perfect future
infinitives firmāre firmāvisse firmātūrum esse firmārī firmātum esse firmātum īrī
participles firmāns firmātūrus firmātus firmandus
verbal nouns gerund supine
genitive dative accusative ablative accusative ablative
firmandī firmandō firmandum firmandō firmātum firmātū

Derived termsEdit


  • Catalan: firmar
  • Dalmatian: fermur
  • English: firm, firmation
  • French: fermer


  • firmo in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • firmo in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • firmo in Gaffiot, Félix (1934) Dictionnaire Illustré Latin-Français, Hachette
  • Carl Meissner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • to garrison a town: praesidiis firmare urbem
    • to strengthen the camp by outposts: castra praesidiis firmare





  1. First-person singular (yo) present indicative form of firmar.