From Proto-Indo-European *lewk-o-dʰro-, which is derived from Proto-Indo-European *lewk-. Cognate to lūx (light) and lūceō (I am light).



lūcubrō (present infinitive lūcubrāre, perfect active lūcubrāvī, supine lūcubrātum); first conjugation

  1. (intransitive) I work at night, candlelight or lamplight, lucubrate.
  2. (transitive) I make, produce or compose at night, candlelight or lamplight.

Usage notesEdit

  • In ordinary Classical Latin pronunciation, when the cluster br occurs intervocalically at a syllabic boundary (denoted in pronunciatory transcriptions by ⟨.⟩), both consonants are considered to belong to the latter syllable; if the former syllable contains only a short vowel (and not a long vowel or a diphthong), then it is a light syllable. Where the two syllables under consideration are a word's penult and antepenult, this has a bearing on stress, because a word whose penult is a heavy syllable is stressed on that syllable, whereas one whose penult is a light syllable is stressed on the antepenult instead. In poetic usage, where syllabic weight and stress are important for metrical reasons, writers sometimes regard the b in such a sequence as belonging to the former syllable; in this case, doing so alters the word's stress. For more words whose stress can be varied poetically, see their category.


   Conjugation of lūcubrō (first conjugation)
indicative singular plural
first second third first second third
active present lūcubrō lūcubrās lūcubrat lūcubrāmus lūcubrātis lūcubrant
imperfect lūcubrābam lūcubrābās lūcubrābat lūcubrābāmus lūcubrābātis lūcubrābant
future lūcubrābō lūcubrābis lūcubrābit lūcubrābimus lūcubrābitis lūcubrābunt
perfect lūcubrāvī lūcubrāvistī lūcubrāvit lūcubrāvimus lūcubrāvistis lūcubrāvērunt, lūcubrāvēre
pluperfect lūcubrāveram lūcubrāverās lūcubrāverat lūcubrāverāmus lūcubrāverātis lūcubrāverant
future perfect lūcubrāverō lūcubrāveris lūcubrāverit lūcubrāverimus lūcubrāveritis lūcubrāverint
passive present lūcubror lūcubrāris, lūcubrāre lūcubrātur lūcubrāmur lūcubrāminī lūcubrantur
imperfect lūcubrābar lūcubrābāris, lūcubrābāre lūcubrābātur lūcubrābāmur lūcubrābāminī lūcubrābantur
future lūcubrābor lūcubrāberis, lūcubrābere lūcubrābitur lūcubrābimur lūcubrābiminī lūcubrābuntur
perfect lūcubrātus + present active indicative of sum
pluperfect lūcubrātus + imperfect active indicative of sum
future perfect lūcubrātus + future active indicative of sum
subjunctive singular plural
first second third first second third
active present lūcubrem lūcubrēs lūcubret lūcubrēmus lūcubrētis lūcubrent
imperfect lūcubrārem lūcubrārēs lūcubrāret lūcubrārēmus lūcubrārētis lūcubrārent
perfect lūcubrāverim lūcubrāverīs lūcubrāverit lūcubrāverīmus lūcubrāverītis lūcubrāverint
pluperfect lūcubrāvissem lūcubrāvissēs lūcubrāvisset lūcubrāvissēmus lūcubrāvissētis lūcubrāvissent
passive present lūcubrer lūcubrēris, lūcubrēre lūcubrētur lūcubrēmur lūcubrēminī lūcubrentur
imperfect lūcubrārer lūcubrārēris, lūcubrārēre lūcubrārētur lūcubrārēmur lūcubrārēminī lūcubrārentur
perfect lūcubrātus + present active subjunctive of sum
pluperfect lūcubrātus + imperfect active subjunctive of sum
imperative singular plural
first second third first second third
active present lūcubrā lūcubrāte
future lūcubrātō lūcubrātō lūcubrātōte lūcubrantō
passive present lūcubrāre lūcubrāminī
future lūcubrātor lūcubrātor lūcubrantor
non-finite forms active passive
present perfect future present perfect future
infinitives lūcubrāre lūcubrāvisse lūcubrātūrum esse lūcubrārī lūcubrātum esse lūcubrātum īrī
participles lūcubrāns lūcubrātūrus lūcubrātus lūcubrandus
verbal nouns gerund supine
genitive dative accusative ablative accusative ablative
lūcubrandī lūcubrandō lūcubrandum lūcubrandō lūcubrātum lūcubrātū

Derived termsEdit

Related termsEdit


  • Aromanian: lucredz (possibly)
  • English: lucubrate
  • Portuguese: lobrigar, lucubrar