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From Proto-Italic *ruðēō, from Proto-Indo-European *h₁rudʰéh₁ti (to be red), from the root *h₁rewdʰ- (red).



rubeō (present infinitive rubēre, perfect active rubuī); second conjugation, no passive, no supine stem

  1. I am red or ruddy.
    1. (of persons) I am blushing (as a sign of shame, modesty, or joy)

Usage notes[edit]


  • This verb has only limited passive conjugation; only third-person passive forms are attested in surviving sources. The third principal part is shared with rubēscō.
   Conjugation of rubeō (second conjugation, no supine stem, active only)
indicative singular plural
first second third first second third
active present rubeō rubēs rubet rubēmus rubētis rubent
imperfect rubēbam rubēbās rubēbat rubēbāmus rubēbātis rubēbant
future rubēbō rubēbis rubēbit rubēbimus rubēbitis rubēbunt
perfect rubuī rubuistī rubuit rubuimus rubuistis rubuērunt, rubuēre
pluperfect rubueram rubuerās rubuerat rubuerāmus rubuerātis rubuerant
future perfect rubuerō rubueris rubuerit rubuerimus rubueritis rubuerint
subjunctive singular plural
first second third first second third
active present rubeam rubeās rubeat rubeāmus rubeātis rubeant
imperfect rubērem rubērēs rubēret rubērēmus rubērētis rubērent
perfect rubuerim rubuerīs rubuerit rubuerīmus rubuerītis rubuerint
pluperfect rubuissem rubuissēs rubuisset rubuissēmus rubuissētis rubuissent
imperative singular plural
first second third first second third
active present rubē rubēte
future rubētō rubētō rubētōte rubentō
non-finite forms active passive
present perfect future present perfect future
infinitives rubēre rubuisse
participles rubēns
verbal nouns gerund supine
genitive dative accusative ablative accusative ablative
rubendī rubendō rubendum rubendō

Derived terms[edit]

Related terms[edit]


  • rubeo in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • rubeo in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • rubeo in Gaffiot, Félix (1934) Dictionnaire illustré Latin-Français, Hachette