Definition 2022



See also: néscio



nesciō (present infinitive nescīre, perfect active nescīvī, supine nescītum); fourth conjugation

  1. I cannot, I do not know, I am ignorant, I do not understand.
    • From Pro Caelio (For Marcus Caelius) by Cicero (Latin and English translation may be found here, also English and Latin on Wikisource)
      Quae tu quoniam mente nescio qua effrenata atque praecipiti in forum deferri iudiciumque voluisti, aut diluas oportet ac falsa esse doceas aut nihil neque crimini tuo neque testimonio credendum esse fateare.
      And as for you, since, through some unbridled and headlong fury which I cannot comprehend you have chosen these things to be brought into court, and dilated on at this trial, you must either efface the charges yourself, and show that they are without foundation, or else you must confess that no credit is to be given to any accusations which you may make, or to any evidence which you may give.
    • (Carl von Linné, Critica botanica).
      Nōminanescīs, perit et cognitio rērum.
      If you do not know names, the knowledge of the things is also lost.
    Nōmen nesciō. (N.N.)
    I do not know the name.
    Oculāria tē gerere nesciēbam.
    I didn't know you wore glasses.


   Conjugation of nescio (fourth conjugation)
indicative singular plural
first second third first second third
active present nesciō nescīs nescit nescīmus nescītis nesciunt
imperfect nesciēbam nesciēbās nesciēbat nesciēbāmus nesciēbātis nesciēbant
future nesciam nesciēs nesciet nesciēmus nesciētis nescient
perfect nescīvī nescīvistī nescīvit nescīvimus nescīvistis nescīvērunt, nescīvēre
pluperfect nescīveram nescīverās nescīverat nescīverāmus nescīverātis nescīverant
future perfect nescīverō nescīveris nescīverit nescīverimus nescīveritis nescīverint
passive present nescior nescīris, nescīre nescītur nescīmur nescīminī nesciuntur
imperfect nesciēbar nesciēbāris, nesciēbāre nesciēbātur nesciēbāmur nesciēbāminī nesciēbantur
future nesciar nesciēris, nesciēre nesciētur nesciēmur nesciēminī nescientur
perfect nescītus + present active indicative of sum
pluperfect nescītus + imperfect active indicative of sum
future perfect nescītus + future active indicative of sum
subjunctive singular plural
first second third first second third
active present nesciam nesciās nesciat nesciāmus nesciātis nesciant
imperfect nescīrem nescīrēs nescīret nescīrēmus nescīrētis nescīrent
perfect nescīverim nescīverīs nescīverit nescīverīmus nescīverītis nescīverint
pluperfect nescīvissem nescīvissēs nescīvisset nescīvissēmus nescīvissētis nescīvissent
passive present nesciar nesciāris, nesciāre nesciātur nesciāmur nesciāminī nesciantur
imperfect nescīrer nescīrēris, nescīrēre nescīrētur nescīrēmur nescīrēminī nescīrentur
perfect nescītus + present active subjunctive of sum
pluperfect nescītus + imperfect active subjunctive of sum
imperative singular plural
first second third first second third
active present nescī nescīte
future nescītō nescītō nescītōte nesciuntō
passive present nescīre nescīminī
future nescītor nescītor nesciuntor
non-finite forms active passive
present perfect future present perfect future
infinitives nescīre nescīvisse nescītūrus esse nescīrī nescītus esse nescītum īrī
participles nesciēns nescītūrus nescītus nesciendus
verbal nouns gerund supine
nominative genitive dative/ablative accusative accusative ablative
nescīre nesciendī nesciendō nesciendum nescītum nescītū







  1. Alternative form of nesciu