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Alternative forms[edit]


From earlier gnōscō, from Proto-Italic *gnōskō, from Proto-Indo-European *ǵn̥h₃sḱéti.



nōscō (present infinitive nōscere, perfect active nōvī, supine nōtum); third conjugation

  1. I know, recognize, am acquainted with, i.e.; in possession of knowledge.


   Conjugation of nosco (third conjugation)
indicative singular plural
first second third first second third
active present nōscō nōscis nōscit nōscimus nōscitis nōscunt
imperfect nōscēbam nōscēbās nōscēbat nōscēbāmus nōscēbātis nōscēbant
future nōscam nōscēs nōscet nōscēmus nōscētis nōscent
perfect nōvī nōvistī, nōsti1 nōvit nōvimus nōvistis, nōstis1 nōvērunt, nōvēre
pluperfect nōveram nōverās nōverat nōverāmus nōverātis nōverant
future perfect nōverō nōveris nōverit nōverimus nōveritis nōverint
passive present nōscor nōsceris, nōscere nōscitur nōscimur nōsciminī nōscuntur
imperfect nōscēbar nōscēbāris, nōscēbāre nōscēbātur nōscēbāmur nōscēbāminī nōscēbantur
future nōscar nōscēris, nōscēre nōscētur nōscēmur nōscēminī nōscentur
perfect nōtus + present active indicative of sum
pluperfect nōtus + imperfect active indicative of sum
future perfect nōtus + future active indicative of sum
subjunctive singular plural
first second third first second third
active present nōscam nōscās nōscat nōscāmus nōscātis nōscant
imperfect nōscerem nōscerēs nōsceret nōscerēmus nōscerētis nōscerent
perfect nōverim nōverīs nōverit nōverīmus nōverītis nōverint
pluperfect nōvissem, nōssem1 nōvissēs, nōsses1 nōvisset, nōsset1 nōvissēmus, nōssemus1 nōvissētis, nōssetis1 nōvissent, nōssent1
passive present nōscar nōscāris, nōscāre nōscātur nōscāmur nōscāminī nōscantur
imperfect nōscerer nōscerēris, nōscerēre nōscerētur nōscerēmur nōscerēminī nōscerentur
perfect nōtus + present active subjunctive of sum
pluperfect nōtus + imperfect active subjunctive of sum
imperative singular plural
first second third first second third
active present nōsce nōscite
future nōscitō nōscitō nōscitōte nōscuntō
passive present nōscere nōsciminī
future nōscitor nōscitor nōscuntor
non-finite forms active passive
present perfect future present perfect future
infinitives nōscere nōvisse, nōsse1 nōtūrus esse nōscī nōtus esse nōtum īrī
participles nōscēns nōtūrus nōtus nōscendus
verbal nouns gerund supine
nominative genitive dative/ablative accusative accusative ablative
nōscere nōscendī nōscendō nōscendum nōtum nōtū

1At least one rare poetic syncopated perfect form is attested.

Also in classical Latin are nōram for nōveram, nōrim for nōverim, nōmus for nōvimus.

Derived terms[edit]


  • nosco in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • nosco in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • nosco” in Félix Gaffiot’s Dictionnaire Illustré Latin-Français, Hachette (1934)
  • Carl Meissner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • to be acquainted with the history of one's own land: domestica (externa) nosse